source: git/NEWS @ 040c02e

Last change on this file since 040c02e was 040c02e, checked in by Olly Betts <olly@…>, 3 months ago

Update for 1.2.42

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1Changes in 1.2.42 (2019-09-04):
3* aven:
5  + Allow colouring by horizontal or vertical error.
7  + (Unix version): Disable scaling for HiDPI displays with GTK3.  The OpenGL
8    code needs work before this will work usefully, so just disable for now
9    (which simulates how things are when using GTK2).
11  + (Unix version): Fix orientation of notebook tabs when build with wxWidgets
12    3.1 development versions.  We want horizontal tab orientation, but were
13    passing a weird flag combination which now results in vertical tab
14    orientation.
16* When exporting to a format where we support rotation in the horizontal
17  plane (such as SVG), the rotation was incorrectly applied to cross section
18  data (except for the default rotation of zero).  Fixes #108, reported by
19  Richard Knapp.
21* Add a section to the manual covering the command line tools, and what you
22  might still need to use them for.
24* Fix compiler warning when building from source with GCC 9.
26* Consistently refer to macOS not OS X - Apple have renamed it yet again.
28* (macOS version): Revert the workaround for the crash on macOS 10.14.  The
29  bug we were working around is fixed in git ready for wxWidgets 3.0.5 and
30  there's a backported fix in the homebrew wxmac 3.0.4-2 package, which is how
31  we now recommend people install on a Mac.  Closes #101, reported by floho.
33* (macOS version): Remove script since installing from homebrew
34  is now the recommended approach.
36Changes in 1.2.41 (2019-07-10):
38* aven:
40  + (Microsoft Windows version): Fix error on startup in the pre-built version
41    of 1.2.39 and 1.2.40.  This is a recurrence of the same issue as affected
42    1.2.33 - this time I've patched out the unnecessary check in wxWidgets
43    which causes this problem so it shouldn't recur again.  Reported by
44    Brian Clipstone.
46  + (macOS version): Add work around for crash on macOS 10.14 (not fully tested
47    as I don't have access to a Mac).  Hopefully fixed #101, reported by floho.
49Changes in 1.2.40 (2019-07-04):
51* aven: Draw the measuring line ring with an even shape.  Previously the exact
52  shape of the ring varied slightly depending on the exact coordinates, which
53  could be visually distracting once you noticed it.
55* We were casting a function pointer with a bool return type to the same type
56  but with a void return type.  In practice this probably works fine on most
57  platforms, but it's undefined behaviour and also gives a compiler warning
58  with some compilers.
60* Fix bug introduce in 1.2.39 with where the "esri" data file for PROJ is
61  installed.
63Changes in 1.2.39 (2019-06-29):
65* Support versions 5.x and 6.x of the PROJ library we use for handling
66  conversions between coordinate systems.  Reported by Bas Couwenberg
67  in #102, by Richard Knapp in #103 and by Martin Sluka in email.
69* (Unix and Mac OS versions): When checking if something is a file or if it is
70  a directory, we no longer treat a symlink as being neither, but instead
71  return an answer based on what the symlink points to.
73* aven:
75  + Improve handling of hidden splay ends.  Previously, hidden splay ends still
76    served as "targets" for snapping the mouse pointer to, and still got
77    crosses when crosses were enabled.  We don't have a handy flag for "this is
78    the outer end of a splay" and computing that on demand isn't so easy to do,
79    so for now we use the "anonymous station" flag so at least these cases now
80    behave properly for splays to anonymous stations (which is likely to be
81    what people with huge numbers of splays from disto-x, etc are using).  This
82    does mean that anonymous stations on continuation passages will incorrectly
83    also be off when splays are hidden, but that seems an OK trade-off for now
84    and a definite improvement over the previous situation.  The snapping of
85    the mouse pointer was reported by Frank Tully in #105.
87  + Fix typo in export UI (CVS should be CSV).
89* Documentation:
91  + Add CSV to documented list of survexport output formats.
93  + Fix *declination syntax synopsis - "auto" is a literal string, not a
94    placeholder.
96  + Update PROJ project name and website - the name is now "PROJ" (all caps and
97    no ".4" suffix) and the website is now:
99* Install gtksourceview-3.0 language file so .svx files now get syntax
100  highlighting in gedit and other GtkSourceView-based editors.  Patch
101  from Philip Withnall.  Fixes #98.
103* (Microsoft Windows version): The Survex installer doesn't uninstall the old
104  version when you upgrade, but just overwrites it with the new version.  In
105  1.2.35 cad3d.exe was replaced with survexport.exe, but a user upgrading from
106  an older version would still have cad3d.exe from that old version.  We now
107  remove any old cad3d.exe left over from a previous install in the same
108  location to avoid confusion.
110* Add a few more message translations.
112* Fix warnings when built with a C++11 compiler.
114Changes in 1.2.38 (2019-03-02):
116* cavern:
118  + Deprecate MILS as angular units.  Survex has long support MILS as an alias
119    for GRADS.  However, this seems to be a bogus definition of a "mil" which
120    is unique to Survex (except that Therion has since copied it) - there are
121    several different definitions of a "mil" but they vary from 6000 to 6400 in
122    a full circle, not 400.  Reported by Andy Edwards.
124  + Fix segfault for *include "".  This isn't useful, but shouldn't crash.  It
125    now reports "file not found" instead.
127  + Use isnan() to check for not-a-number.  This is cleaner, more robust and
128    more efficient than formatting the number as a string and checking for
129    "NaN" or "nan" in the result.
131* Avoid unused variable warning when compiling from source with modern ffmpeg.
133* Drop support for wxWidgets < 3.0.  3.0.0 was released over 5 years ago and
134  should be easily available everywhere by now.  I'm no longer easily able to
135  test with wxWidgets 2.8, and this allows a significant amount of cruft to be
136  removed.
138* (Linux version): survex.spec: Fedora have removed gcc from the default build
139  environment so need to explicitly list it in the BuildRequires tag.  See
140 for more
141  information.  Patch from James Begley.
143Changes in 1.2.37 (2018-11-18):
145* aven:
147  + Add basic "Colour by Survey" feature.  The colours used aren't currently
148    controllable.
150  + Fix export of splays.  Patch from Thomas Holder.
152  + Fix KML export to avoid invalid geometry when a tube intersects itself.
153    Patch from Robert Jones.
155  + (Unix version): Fix to work under Wayland by forcing the x11 GDK backend
156    for now.  This is a workaround until wxWidgets OpenGL support is updated
157    to work under Wayland.  Reported by Philip Balister.
159  + Fix warnings about using deprecated functions when building movie export
160    code using FFmpeg 4.0.
162* cavern:
164  + Compass MAK files: Handle fixed point coordinates in feet - previously the
165    units were ignored and the coordinates assumed to be in metres.
167  + Previously the first byte in a MAK file was ignored.  Typically MAK files
168    start with a comment, and since cavern currently ignores lines that start
169    with characters it doesn't understand the meaning of, this bug would often
170    go unnoticed.
172* survexport:
174  + Fix exporting of passages, walls and cross-sections by running the code
175    aven uses to decide how much to rotate each cross-section.  Previously all
176    cross-sections were aligned West-East.  Reported by Robert Jones.
178  + Default to .pos output if the program name is 3dtopos, and install a second
179    copy (or hardlink under Unix) as 3dtopos.  This provides compatibility with
180    current releases of Tunnel.  Reported by Becka Lawson, Wookey and
181    Stephen Crabtree.
183* Fix some German translations.  Patch from Thomas Holder.
185* (MacOS X version): Fix aven-create-app to not delete converted icons.
186  Typo spotted by Robert Jones.
188* Improve documentation for *team.  Document the requirement to quote names
189  unless a person is identified by just one name.  Document that the roles are
190  optional, as that information may not have been recorded, and to align with
191  therion's team command.
193Changes in 1.2.36 (2018-07-18):
195* aven:
197  + Add support for exporting as a CSV (Comma-Separated Values) file.
199  + Support exporting KML with altitude mode "clamp to ground".  In this mode,
200    the altitude in the data is ignored and it's rendered on the surface of the
201    terrain.  This is useful if your KML viewer renders the terrain as opaque
202    so underground data isn't visible.  Rendering cave passages on the surface
203    isn't great, but is better than not being able to see them at all.  This
204    option may also be helpful if you want to see where to look on the surface
205    for new entrances.
207  + Highlight surveys with a white loop as the mouse is moved over them in
208    the survey tree.  This is akin to how we highlight a station with a
209    white ring, and allows restoring "double-click survey in tree to zoom"
210    which temporarily required a quadruple-click in 1.2.35.
212  + Only show checkboxes in the survey tree for surveys not stations.
214  + Fix wxWidgets assertion if the user tried to select additional surveys
215    to show via the right-click menu.
217  + Fix multiple survey filtering when both a parent and child survey are
218    selected.  In this case it makes most sense to show all child surveys of
219    the parent, but we actually showed a slightly arbitrary subset of the
220    child surveys of the parent.
222  + The checkbox area in the survey tree is now included in the area which
223    is considered by mouse-over updates such as highlighting the station or
224    survey.
226  + Fix display of double quotes in cavern log window (they were being replaced
227    with control character 0x16 due to a typo in the code).
229  + Add shortcuts to buttons in cavern log window.
231  + Eliminate use of gluErrorString() function which eliminates some
232    deprecation warnings when building on macOS.
234  + Reject multiple --survey command line options for now (only the last has
235    been used for a long time, but now we actually support multiple survey
236    filtering this matters more).
238* survexport:
240  + Report a useful error when trying to convert a .3d file without coordinate
241    system information to GPS.  Reported by Mark Shinwell.
243  + Handle multiple redundant --survey command line options correctly.
245* dump3d: Report station flag "WALL", which was added in 1.2.7.
247* Minor translation updates.
249* Update manual for Microsoft Windows changes.
251* tests/: Add test coverage for warnings about suspect readings
253* Fix warning when compiling with clang.
255Changes in 1.2.35 (2018-07-03):
257* aven:
259  + Viewing can now be restricted to multiple surveys.  Use the right-button
260    menu on a survey in the survey tree and select "Show" to enable checkboxes
261    for that survey and all its siblings.  Only the selected surveys are shown
262    on screen, printed and exported.
264  + Don't open a survey when its name is double clicked.  This was happening
265    due to code added to "allow double-clicking to work on wxMSW >= 2.8.11".
266    However, reverting that change still seems to allow double-clicking to work
267    on both wxMSW and wxGTK, but fixes the unwanted additional opening of the
268    survey.
270  + Pick initial survey scaling based on whichever of the window width or
271    height gives the smaller scale.  Previously we always used the window
272    width, which can result in parts of the cave being outside the initial
273    view.  Reported by Wookey.
275  + Drop ability to specify a PROJ string in the export dialog.  This was added
276    to allow exporting to formats such as GPX before we added support for
277    specifying the projection in .svx files, and that support is now mature.
279  + DXF export now uses 2 decimal places (was 6) for the bounding box, for
280    consistency with the precision used for coordinates.
282  + Fix handling of surface flag during export.  In formats which discriminate,
283    legs could previously have got assigned the wrong status.
285  + Fix bug which probably prevented aven starting when OpenGL double buffering
286    is unavailable.  This is unlikely to affect any common configurations.
288  + (Microsoft Windows version): Fix loading of 3d files with non-ASCII
289    filenames.  Issue reported by Matic.
291  + (Microsoft Windows version): Fix incorrect display of some toolbar icons.
292    Probably broken since 1.2.17.
294* survexport: New command-line export program which uses aven's export code.
295  Replaces 3dtopos, cad3d and findentrances, since it can do all that these
296  tools could do, plus much more.
298* Merge more Spanish i18n updates from Evaristo Quiroga.
300* Minor updates to various other translations.
302* img library:
304  + Now supports reading from and writing to an existing FILE*.
306  + Improve API documentation.
308* (Microsoft Windows version): Fix packaging to include wxWidgets translation
309  files like it was supposed to, which fixes a few missing translations.  This
310  was probably broken by changes in 1.2.8.  Reported by Evaristo Quiroga.
312* (Microsoft Windows version): Drop two options from explorer bindings.
313  "Convert to DXF" and "Convert for hand plotting" have both been supported via
314  aven for a while, and that's a more useful way to access them as you can
315  control what gets exported.
317Changes in 1.2.34 (2018-03-24):
319* aven:
321  + (Microsoft Windows version): Fix error on startup in the pre-built version
322    of 1.2.33.
324  + (Microsoft Windows version): Now using wxWidgets 3.0.4 (was 3.0.2).
326Changes in 1.2.33 (2018-03-22):
328* aven:
330  + Reliably disable scale bar in perspective view.  This is supposed to happen
331    (because the scale across the screen varies in perspective view) but
332    actually the scale bar stayed around until an update was forced for another
333    reason.  Spotted thanks to Pedro Silva Pinto.
335  + Make "no date"/"not in loop" colour grey.  The white was a bit bright and
336    made it harder to see the legs that had colours.  The grey now used is
337    within the brightness range of the other colours.  Fixes #94, reported by
338    Erin Lynch.
340  + Fix KML export - exporting both survey legs and station names resulted in a
341    malformed KML file.  This bug was introduced in 1.2.30 when support for
342    exporting passages and walls was added.  Reported by Erin Lynch in #90.
344  + Consistently use 2 decimal places for altitude in KML output.  Some places
345    used 8 decimal places which is appropriate for lat and long, but clearly
346    overkill for an altitude in metres and increases the file size
347    unnecessarily.
349  + Right-align bearing widget in print/export dialog.  The change to allow the
350    value to wrap round from 360 to 0 in 1.2.27 inadvertently made this control
351    left-aligned (due to incorrect wxWidgets documentation of the default style
352    for this control).
354  + (Unix version): Work around wxWidgets bug so that custom cursors work
355    under GTK3.
357  + (Unix version): Update GTK version reporting - report GTK3, and don't
358    bother to report subversions of GTK2 (it seems to be fairly arbitrary
359    which subversions wxWidgets defines constants for).
361  + Update code to work without warnings when using wxWidgets 3.1.0 (the
362    current development version).
364  + Make movie export code compatible with upcoming FFmpeg 3.5 release.
365    It should still work with the older versions that worked before this
366    change.  Reported by James Cowgill in
368* cavern:
370  + Warn about 2 digit years.  We can't change the assumption that these are
371    19xx without risking breaking existing datasets, but the further we get
372    into this century, the more likely such an assumption is to catch someone
373    out.  The warning can easily be quashed by explicitly adding the assumed
374    "19".
376* The Spanish translation is now up to date once more, thanks to updates from
377  Evaristo Quiroga.
379* Merge French translation updates from Jean-Marc.
381* Fix transposed German Northing and Easting labels.  Fixes #95, reported by
382  milosch.
384* Fill in missing translations of "Easting", "Northing", "E" and "N" for
385  Bulgarian, Greek, Hungarian, Polish and Russian based on other existing
386  translated messages.
388* Align .pos file headings better with columns of coordinates below for
389  Indonesian and Polish.
391* Fix handling of the message string "error" before messages loaded.  If
392  there's an error loading messages, we need this message to report it.
393  Reported by Martin Sluka.
395* Fix a few compiler warnings.
397* img library: Fix extracting leaf survey name for survey title.  When there
398  are three or more levels of survey, we were taking everything after the first
399  dot rather than everything after the last dot.
401* Fix problems with testsuite on macOS:
403  + cavern.tst: Skip "ONELEG" testcase on case-insensitive filing systems
404    - this test isn't meaningful unless the filing system is case-sensitive,
405    but happens to fail if it isn't.
407  + cavern.tst: Workaround limitations of Apple's sed.
409  + aven.tst: Fix not to hang on macOS.
411  + smoke.tst: Remove aven testcases which duplicate those in aven.tst.
413* Clean up handling of support files in relocatable installs - this is now
414  detected at run time on macOS.
416* Split out macOS creation into a make rule so it can be easily used
417  by the homebrew formula.
421  + Fix when WX_CONFIG not specified - this was giving a confusing error like:
422    ./ line 163: --cc: command not found
424  + Use wxWidgets 3.0.4.
426* Stop checking wx-config --ldflags as this option was removed in wxWidgets 2.6
427  and we currently require 2.8 or newer.
429Changes in 1.2.32 (2017-07-08):
431* aven:
433  + Make splays on printouts a darker shade of grey.  Reported by Erin Lynch
434    and Anthony Day.
436  + In export formats which include 3 dimensions (DXF, PLT, GPX, KML, JSON,
437    POS), the value in the Z dimension was negated.  Bug introduced by fixes
438    for export of rotated plans and tilted elevations in 1.2.27.  Reported by
439    Erin Lynch in #89.
441  + Ignore viewing angles for export formats which work in 3D.  When the
442    rotation and tilt controls are hidden in the export dialog we were still
443    using their values to transform the data, so if you set them with for one
444    export format which support them, then switched to an export format which
445    doesn't, you'd get bogus coordinates in the exported file.  Bug probably
446    introduced in 1.2.27 by fixes for exports of rotated plans and tilted
447    elevations.
449  + Fix exporting to skencil and Survex .pos formats.  When aven's export to
450    .pos was added in 1.2.19, the ordering didn't match up and since then .pos
451    export has produced skencil files and vice versa.
453  + Don't leave terrain on if loading terrain data fails.  Previously if you
454    clicked the terrain icon (or via the menu) with no terrain loaded, but no
455    terrain got loaded (e.g. because the survey data lacks an explicit
456    coordinate system, or because the file failed to load, or because you
457    cancelled the dialog) then the terrain icon/menu item was still changed to
458    "on".
460  + Disable texturing while drawing terrain.  Previously the terrain got a bit
461    darker when "Textured Walls" were enabled.
463  + Force a refresh when "Textured Walls" are enabled or disabled.  Previously
464    the display wouldn't update right away.
466* Manual:
468  + Document how to specify fixed point altitude in feet.
470  + Explain why *fix warns about unused fixed points
472* Building from source now requires a compiler with decent support for C++11.
473  If you're using GCC, then GCC 4.7 should suffice.  This should not be an
474  onerous requirement - e.g. Debian wheezy and Ubuntu trusty both have a recent
475  enough GCC.  If special options are needed, these should get probed for and
476  automatically.  Fixes building 1.2.31 with GCC < 6, reported by Wookey.
478Changes in 1.2.31 (2017-07-01):
480* aven:
482  + Use superscript 'g' symbol instead of word 'grads' in status bar.  This
483    conserves the limited space available, and we already do this in the
484    compass and clino indicators so it's more consistent too.
486  + Show one decimal place on measure line bearing.  Pointed out by Benedikt
487    Hallinger on the therion list, though I'm sure this has been asked for
488    before by others.
490  + Show gradient of the measuring line when both ends are stations.
492  + Allow selection of text in cavern log window.  Selection was disabled in
493    1.2.28 because it seemed you couldn't actually copy selected text to the
494    clipboard, but retesting this now actually works fine for me, both with
495    current git master with the change reverted, and with code just before the
496    original change.
498  + More robust parsing of cavern output (cleanly handle context highlighting
499    which extends beyond the end of the line).
501  + Allow showing duplicate legs as dashed lines or hiding them entirely,
502    with dashed now being the default.  Implemented by Patrick Warren.
504  + Also allow "Dashed" for splays and "Faded" for duplicate legs.
506  + Splay legs in surface data are also shown faded.
508  + Check environment variables VISUAL and EDITOR when looking for editor to
509    use when a warning or error is clicked on in the cavern log window.  The
510    specified editor may have a GUI or need to run in a terminal, so we have to
511    special-case each editor supported, and that means we can pass extra
512    options needed to position the cursor on the appropriate line/column.
513    Currently these editors are supported: gvim, nvim, vim, gedit, pluma,
514    emacs, nano, jed, kate.  Suggested by Wookey.
516  + Fix handling of non-square terrain data files - the X and Y dimensions were
517    swapped.  Reported by detrito.
519  + Improve parsing of DEM data with .hdr file.  Use documented defaults for
520    more values, and where we only support a subset of values (or a particular
521    value) check for unsupported values in more cases.
523  + When colouring by depth, fix colouring and texturing of polygons which
524    cross depth bands.  The previous problems were most obvious with high
525    chambers and long legs down deep pitches, especially in for surveys without
526    much vertical range.
528  + Support for drawing blobs using point sprites was added in 1.2.28,
529    but caching that this worked wasn't hooked up properly so the test to
530    see if this worked would happen at the start of each run.  This is now
531    cached as intended which should reduce start up time a little when blobs
532    are drawn in this way.
534  + Fix drawing of crosses with lines.  This is a fall-back case which is
535    rarely used as most OpenGL setups will handle a better method, but it was
536    resulting in crosses with a four-pixel square in the centre - now the
537    centre should be a single pixel.
539* cavern:
541  + Allow *data with no arguments to reset the current style - useful for
542    entering passage data where there are side passages.
544  + Fix hang processing file without newline at end.  This bug was introduced
545    by changes in 1.2.28.  Reported by Mark Brown.
547  + (Mac OS X and Microsoft Windows versions): Build with newer version of
548    PROJ library which fixes buggy handling of *fix with lat-long coordinates.
549    Also add a testcase to the testsuite to alert users building for themselves
550    with an affected PROJ version on any platform.  Reported by Ross Davidson.
552  + Fix cavern to handle Compass .DAT with no survey team.  Previously this
553    resulted in the bogus error: Expecting numeric field, found "FROM"
554    Reported by Erin Lynch.
556  + Handle UTF-8 "BOM" at start of .svx files.  Unicode doesn't recommend its
557    use, but Microsoft stuff seems to like to create files with it in, and the
558    error cavern currently reports for such files is very confusing, so it
559    seems best to just handle it.  Reported by Rob Eavis.
561  + Change a couple of messages to use double quotes for consistency with all
562    other messages.
564* extend:
566  + Now runs a bit faster.
568  + Splays are now carried over the extended survey.  The current handling
569    is simplistic, but should do a good enough job to be more useful than
570    discarding splays.  The splays at each station are all rotated together
571    based on the bearing between the stations either side of the current one
572    along the first path extended through that station.  This nicely handles
573    dead ends and the situation at the top or bottom of a pitch, and should
574    tend to pick an angle close to the passage orientation along a traverse.
575    It's weakest at junctions.  Feedback (especially examples which could
576    be handled better) most welcome.
578* French translation is now up to date again, thanks to Jean-Marc.
580* Remove erroneous menu shortcut markers from Polish translations.
582* Fill in some missing translations in several languages by using message
583  translations from therion.
585* Add note to *fix documentation to clarify the coordinate order with *cs
586  long-lat.  Issue raised by Ross Davidson.
588* Fix errors in documentation of *units: "DEG" should be "DEGS", and
589  "MINUTES" has been supported for ages but wasn't documented.  Reported by
590  Footleg.
592* Fix a few typos in the documentation.
594* Fix compilation warning with recent GCC.
596Changes in 1.2.30 (2016-10-03):
598* aven:
600  + (Microsoft Windows version): Fix crash when trying to print or export
601    (probably introduced in 1.2.28).  Reported by Brian Clipstone.
603  + Report error if terrain file contains no terrain data in area of survey.
604    Suggested by detrito.
606  + Errors when writing an export file were reported with the wrong filename
607    - the .3d file, not the filename we were trying to write to.
609  + Export to KML now supports exporting passages, walls and cross-sections.
610    Addresses the remainder of ticket #4.
612* Add man page for dump3d.
614Changes in 1.2.29 (2016-09-27):
616* aven:
618  + Fix SVG output with non-ASCII characters (the charset in the SVG file
619    is now set to UTF-8 not ISO-8859-1).
621  + (Microsoft Windows version): Fix error dialog on startup in pre-built
622    version.  Reported by Brian Clipstone.
624* Manual: Add link to TerrainData wiki page.  Omission highlighted by Erin
625  Lynch and "detrito".
627* Fix to build without FFmpeg/libav and with older versions, broken by changes
628  in 1.2.28.  Reported by James Begley.
630Changes in 1.2.28 (2016-09-24):
632* cavern:
634  + Show the contents of the line after error and warning messages while
635    processing survey data, and indicate the region of the line in many cases
636    in the same style that compilers such as GCC and clang use (using the
637    column number we already have, plus new width information).  Based on a
638    patch from Mateusz Golicz.
640  + Add column and width information for many more error and warning messages.
642  + Fix column for "Separator in survey name" warning.
644  + Improve warnings when using a backclino with range 0-180 degrees (reusing
645    the same machinery we already have for a forward clino with range 0-180
646    degrees).
648* aven:
650  + Include LRUD in printout/export of extended elevations, broken by
651    improvements to export of tilted elevations in 1.2.27.  Reported by Anthony
652    Day.
654  + Name <trk> tags in GPX output, so Garmin GPS units name the imported track
655    usefully.  Reported by Anthony Day.
657  + Remember scale from previous print or export operation in the same run of
658    aven.  Suggested by Stuart Bennett.
660  + Convert range indication below shown line to a highlight on that region
661    of the line in cavern log window.
663  + Fix colouring of error/warning without column in cavern log window.
665  + Fix click on error/warning without column in cavern log window.
667  + Fix highlight of translations of "error" or "warning" containing non-ASCII
668    characters.  This fix for this only works with a Unicode build of
669    wxWidgets, but as of wxWidgets 3.0, all builds are Unicode, so this
670    shouldn't be much of a problem as wxWidgets 2.x is close to obsolete now.
671    Reported by Mateusz Golicz.
673  + Disable selection of text in cavern log window - you can't currently copy
674    it to the clipboard, so until that's implemented it seems better to disable
675    the ability to select it.  Reported by Wookey.
677  + Avoid special "1000" scale entry when exporting.
679  + Show 1 page when "One Page" selected.
681  + Reload processed data when restricting view.  Fixes failure when
682    restricting view on data just processed via aven.  Spotted by Andrew
683    Atkinson and myself.
685  + Don't hide blobs and crosses behind terrain.  Reported by Jenny Black.
687  + Fix rendering of crosses using point sprites.  The texture being used was
688    misaligned relative to the image used for the visual fidelity check, so the
689    check always failed and point sprites would never be used.  Where point
690    sprites are supported, they're probably the fastest option - on my netbook
691    this change improves FPS by ~6 fold when displaying crosses for a large
692    survey.
694  + Support drawing blobs using point sprites.  About 5 times faster than using
695    lines on my netbook.
697  + Recheck how best to draw crosses and blobs on the first run after Survex
698    is upgraded (or downgraded) as the rendering code may have changed (we
699    already recheck when the OpenGL hardware or driver changes).
701  + Change "MPEG" export to be MPEG4 (.mp4) rather than MPEG1 (.mpg).
702    MPEG4 produces smaller output of higher quality, and should be widely
703    supported these days.  And I can't get the MPEG1 output to work without
704    buffer underflows, resulting in a file which doesn't play without
705    glitches.
707  + Add OGG video to the list of formats - it's more compact than the others
708    we currently list, though slower to write.
710  + Fix export to movie formats for which libav/FFmpeg needs to seek the file
711    being written.  This was broken by changes in 1.2.27.
713  + Overhaul movie export for the current FFmpeg API, fixing deprecation
714    warnings when building against a recent version.
716  + (Microsoft Windows version): Fix corrupted exported movie files.  1.2.27
717    changed the movie export code to allow writing to files with non-ASCII
718    characters in the names, but the new code failed to open the file in binary
719    mode, leading to corrupt output.  Fixes #81, reported by Erin Lynch.
721  * (Microsoft Windows version): Pre-built version now uses FFmpeg 3.1.3 for
722    movie export.
724  * (Mac OS X version): Pre-built version now uses FFmpeg 3.1.3 for movie
725    export.
727* Fix to build without FFmpeg/libav, broken by changes in 1.2.27.  Reported by
728  James Begley.
730* The Polish translation is now very close to being complete, thanks to a
731  substantial update from Mateusz Golicz.
733* Merge catalan translation updates from Adolfo Jayme.
735* (Microsoft Windows version): Map LANG_CHINESE to zh_CN not zh so Chinese
736  messages get used automatically.
738* cavern.tst: Remove random : from after ] - dash ignores the extra character,
739  but it causes this test to fail if /bin/sh is a different shell (e.g. bash).
741* cavern.tst: Add expected output for more testcases.
743* Remove unwanted execute bit from some testcase data.
745* Use https for more URLs which support it.
747Changes in 1.2.27 (2016-06-06):
749* aven:
751  + Right click on a survey in the survey tree now gives a pop-up menu
752    with "Hide others", which restricts the view to just that survey
753    and any subsurveys.  Right click on the root of the survey tree
754    gives a menu with "Show all" to undo any restriction in effect.
755    (Currently these are implemented by reloading the file and using
756    the same machinery as the --survey= command line option, but that will
757    probably change in the future).
759  + If there's a sub-survey restriction (from the --survey= command line
760    option or the new UI described above) it is now shown in brackets after
761    the survey tree root.
763  + When reloading a survey, preserve the current view position (previously
764    the view was recentred).
766  + When reloading a survey, actually preserve the current scale factor
767    (this was meant to happen, but the adjustment was applied in the
768    wrong direction).
770  + New "File->Extended Elevation..." menu item provides a way to generate
771    extended elevations for simple cases without having to use the command
772    line.  Suggested by Fleur Loveridge.
774  + Don't process key presses if accompanied by an unexpected modifier key.
775    In particular, this means that aven no longer interferes with Alt+<function
776    key> (which is typically handled by the desktop) and Alt+<letter> (which is
777    typically a menu short cut).  Reported by Владимир Георгиев.
779  + Reduce file loading time by ~5%.  The station name compare function was
780    something of a hot spot, and optimising it yielded a nice improvement.
782  + Allow splay legs to be disabled in when printing and exporting.  Mostly
783    addresses #60.
785  + SVG export now shows splay legs thinner and in grey.  See #60.
787  + Fix export of rotated plans and tilted elevations - previously plans were
788    always aligned with North up, and elevations which weren't exactly side on
789    were exported as plans.  Reported by Stuart Bennett.
791  + Fix offset bounding box for exported elevations.
793  + In print/export dialog the bearing value now wraps if you scroll up past
794    360 or down past 0.
796  + Fix greying out of LRUD-based controls in the print/export dialog when the
797    view is tilted (i.e. not plan or elevation).  This stopped working in
798    1.2.18 when the pan and tilt spin controls were changed from integer- to
799    real-valued ones.
801  + Printouts now show LRUD as pale grey arrows from the station they are
802    measured from.  Based on patch from Michael Sargent.  Closes #65.
804  + Take LRUD into account for printout size.  Fixes #72, reported by Erin
805    Lynch.
807  + Update movie export code to work with latest version of FFmpeg.
809  + Make "Show Log" a toggle, so you can click on the button to take a look at
810    the log, and a second click returns you to the survey view.
812  + (Microsoft Windows version): Open the font file in binary mode - it looks
813    like we were lucky and the font file (or at least its current version)
814    would have loaded OK in text mode despite being binary data.
816  + (Microsoft Windows version): Exporting to files with non-ASCII filenames
817    should now work.
819* cavern:
821  + Allow tape or backtape to be omitted.  Reported by Erin Lynch.
823  + Grid convergence is now corrected for when using automatically
824    calculated declinations (*declination auto <X> <Y> <Z>).  Requested
825    by Mateusz Golicz on the mailing list.
827  + Clear any cached calculated declination upon another *declination auto
828    with different coordinates.  Previously if the date stayed the same,
829    a previously cached declination for the old coordinates was used.
831  + Fix check for end of version number array in *required.   We would check up
832    to 12 version components, the last 9 being bogus.  In practice, *require is
833    only likely to be used with up to three components, so this wouldn't be an
834    issue.
836  + *begin with an invalid prefix could cause a crash in some cases.  Fixed
837    by patch from Colin Watson.
839  + Report column locations for errors to do with readings.
841* Merge translation updates from Jean-Marc.
843* img library: Better document which members can be set when writing.
844  Highlighted by email query about use of img API from Владимир Георгиев.
846* Document how *declination interacts with *calibrate declination if both are
847  used in the same dataset.
849* doc/3dformat.htm: Update details of how changes to the current label buffer
850  are encoded to reflect changes in v8.  Reported by Angus Sawyer.
852* Use docbook2man instead of docbook-to-man to generated Unix man pages
853  from SGML source.  The latter seems to be no longer actively maintained, and
854  docbook2man now does a similarly good job.
856* Use https for links, and for other sites which support it.
858Changes in 1.2.26 (2016-01-07):
860* aven:
862  + (Microsoft Windows version): Fix to be able to process .svx files with
863    cavern again.
865* (Microsoft Windows version): Simplify upgrading process with innosetup
866  installer - if Survex is already installed, we now just install to the same
867  location and use the same start menu folder.
869* (Linux version): survex.spec: Update for filetype metadata change in 1.2.25.
870  Fixes #79, reported by James Begley.
872* (Linux version): survex.spec: Fix to work with RPM 4.13.  Fixes #79, reported
873  by James Begley.
875Changes in 1.2.25 (2016-01-05):
877* aven:
879  + Drop broken code which attempts to fix 2D pitches.  Fixes #73, reported by
880    Erin Lynch.  #76 tracks the issue the removed code was trying (but failing)
881    to address.
883  + When animating, don't try to update station info based on mouse movement
884    over the survey tree.
886  + Further improve code to handle cavern subprocess in aven.
888  + Fix jump to error for filenames containing colons when the error location
889    doesn't have a column number.  Bug noted by Jenny Black.
891  + If we encounter bad UTF-8 in cavern output, replace it with a red and white
892    ? in a diamond (previously we gave up showing output at the first bad
893    sequence).  This can happen if you process a .svx file which isn't UTF-8
894    encoded.
896  + (Unix version): Don't try to set the terminal window title when opening an
897    editor from the cavern log window - gnome-terminal no longer supports this,
898    and there doesn't seem to be a portable option for specifying the title for
899    terminals which do still support this.
901  + (Microsoft Windows version): Also quote for cmd.exe so that paths with
902    spaces in work reliably.  Reported by Marco Cotto.
904* cavern:
906  + Improve error for mismatched fore/back-sight plumbs, reported by Andy
907    Edwards (see #78).
909  + Fix to use correct sd for backcompass.  We were using zero instead, the
910    most obvious effect of which was that the threshold for warning about
911    differing COMPASS and BACKCOMPASS was about 71% of what it should have
912    been, so we were warning in more cases than we should have been.
914  + Implement support for specifying a length on backsights - if you're using
915    something like a disto-x, you'll get a distance reading for the backsight
916    too.  Fixes #71, reported by Erin Lynch.
918  + Make line counting more robust to mixed line ends.  Noticed in example file
919    from Pete Smart (see #69).
921* extend: New --show-breaks option which adds a leg flagged as surface survey
922  between each points at which a loop has been broken.  Suggested by Jenny
923  Black.
925* (Unix version): Update filetype metadata to work with modern desktops.
927* Fix incorrect reporting of errors reading and writing processed survey data.
928  Since 1.2.8, the error strings corresponding to IMG_CANTOPENOUT,
929  IMG_BADFORMAT and IMG_DIRECTORY have been mixed up (this doesn't affect
930  external programs using the img library, only Survex).  Reported by Jenny
931  Black.
933* Add missing options to extend man page and --help output.  Noted by Jenny
934  Black.
936* Document Document Ctrl+cursor keys for rotating and tilting in aven man page.
938* Fix broken SGML markup in manual.
940* Fix typo in manual reported by Jenny Black.
942* Update vim syntax file for newer commands, etc.
944* Minor translation updates.  Thanks to Piotr Strębski and Jean-Marc.
946* Fix to compile with FFmpeg 2.9.  Reported by Andreas Cadhalpun in
949* Stop maintaining ChangeLog files.  They make merging patches harder, and stop
950  'git cherry-pick' from working as it should.  The git repo history should be
951  sufficient for complying with GPLv2 2(a).
953* (Microsoft Windows version): The installer requires admin privileges on Vista
954  and later and OS versions older than Vista are past end of life, so drop code
955  which tries to set up the registry differently depending if we have admin
956  privileges or not.
958Changes in 1.2.24 (2015-09-23):
960* aven:
962  + (Microsoft Windows version): Fix the cavern log window.  Reported by Brian
963    Clipstone.
965  + (Microsoft Windows version): Add workaround to avoid breakage in Therion.
966    Reported by Jenny Black.
968  + If wx was built with thread support, aven now runs cavern from a separate
969    thread, which works much better under wxMSW (where we can't use select),
970    and also seems a bit smoother on Linux.
972  + Fix handling of encoding of filenames when the operating system has no
973    locale installed corresponding to the language selected for Survex's
974    messages.
976  + Undo accidentally committed debugging code which was sending message to
977    the terminal in 1.2.23.
979* (Linux version): configure now looks first for wx-config-3.0, which Fedora's
980  wx3 packages have.  Reported by James Begley.
982* Indonesian translation fully up to date again.
984* Manual: Document anonymous stations, based on the text from NEWS.  Reported
985  by Wookey.
987Changes in 1.2.23 (2015-09-06):
989* aven:
991  + Updating the cavern log window is now much smoother, especially on slower
992    machines.
994  + Show "busy" mouse cursor while processing survey data.
996  + Fix an assertion if you try to start processing a survex file while one is
997    already being processed.
999  + Processing a .svx file with an error now still adds it to the file history.
1000    Reported by Martin Green.
1002  + Fix the orientation of the starting end of tubes.
1004* cavern:
1006  + New *ref command to allow specifying an external reference (e.g. where to
1007    find the original survey notes).
1009  + Drop support for showing percentage progress in cavern.  It's confusing in
1010    a multiple-file dataset as it shows progress in the current file so jumps
1011    around.  It also slows down processing, and on a slow machine you'd don't
1012    want that, while on a fast machine processing isn't slow enough for the
1013    progress display to be useful.
1015* French translation is now completely up to date, thanks to Michel Bovey.
1017* Bundle proj's EPSG and ESRI code lists in the installers for MS Windows and
1018  OS X so that things like "*cs EPSG:29903" work.  Reported by Graham Mullan.
1020* (Microsoft Windows version): Process survey data with aven rather than
1021  running cavern.
1023* (Microsoft Windows version): Installer built with InnoSetup 5.5.6 (recent
1024  releases have been built with 5.5.3) to see if that solves Ray Duffy's
1025  reported issue with not having file associations for .svx files created.
1027Changes in 1.2.22 (2015-08-17):
1029* aven:
1031  + Ensure that the window has a depth buffer.  Whether it does by default
1032    seems to vary depending on OS and maybe graphics card.  Fixes #55 (terrain
1033    is no longer visible through itself), and also the rendering of passage
1034    tubes.  Thanks to Martin Green for pointing me in the right direction for
1035    finding this fix.
1037* cavern:
1039  + Fix *declination with an angle to actually work.
1041  + Fix assertion if we try to identify a hanging survey by an anonymous
1042    station.
1044  + Improve errors for invalid survey names in *begin, *end, *equate and
1045    *export.
1047Changes in 1.2.21 (2015-07-28):
1049* aven:
1051  + Fix exporting to KML and other text-based formats to always use "." for the
1052    decimal separator - previously "," would be used when the user's locale
1053    specified this for the decimal separator.  Reported by Jan Schorn.
1055  + Implement exporting of survey legs in KML format.
1057  + Put "paddle" placemarker icons on stations in exported KML files, using the
1058    same colour coding for entrances, fixed points and exported points as aven
1059    does.
1061  + Remove the "Coordinate projection" field from the print dialog, as it isn't
1062    relevant there.  Reported by Wookey.
1064  + Fix the initial scale for small caves (since 1.2.18 the initial scale has
1065    been too small).  Reported by Wookey.
1067  + Don't rescale if the same file is reloaded, but adjust the volume diameter
1068    as appropriate.
1070  + Use wxGetenv() to read the SURVEXEDITOR variable, so we can accept Unicode
1071    values on Windows.
1073* cavern:
1075  + Fix coordinate systems using latitude and longitude - PROJ.4 wants these in
1076    radians, but we were passing degrees, which would generally cause the
1077    conversion to the output coordinate system to fail.  Reported by Wookey.
1079  + Fix *fix with standard deviations when *cs is in use, give an error for use
1080    of *fix with standard deviations before *cs.
1082  + Add new *declination command with support for setting the declination
1083    automatically from the IGRF model based on the survey date.  Thanks to the
1084    Therion developers for the IGRF support code, which we're reusing.
1085    Fixes #54, reported by Wookey.
1087  + Allow the units for the zero error to be specified, making it easier to
1088    specify calibration with a scale if you measure the zero error externally
1089    (rather than using the instrument itself).  Fixes #61, reported by Andrew
1090    Atkinson.
1092  + Report the error from PROJ when coordinate conversion fails as part of the
1093    actual error rather than on a separate line.
1095  + Fix use after free after *solve.  This only occurs if a leg between the two
1096    exact same stations appears right before and right after the *solve, which
1097    is unlikely in real data, but the testsuite has an instance of this.  This
1098    was introduced by the repeat leg averaging added in 1.2.17.
1100  + Fix small memory leak when solving network.  This doesn't really matter
1101    when solving at the end of processing as cavern will exit after that, but
1102    if *solve is used we continue processing after solving.
1104* Remove compatibility handling for specifying a country variant of a language
1105  in SURVEXLANG using "-" with a lower case country code (e.g. "en-us") - we
1106  changed to the standard "en_US" way back in 2001.  This code was mangling
1107  character sets with a "-" in, and is no longer useful.
1109* Ignore any "@<something>" modifier in the language code.
1111* Improve documentation of magnetic declination handling, and cover the new
1112  "*DECLINATION" command.
1114* Document aven's command line options in the manual and its man page.
1115  Reported by Jenny Black.
1117* Point to '*case' and '*truncate' from the 'SEE ALSO' sections of each other's
1118  documentation.
1120* Remove references to SpeleoGen from the documentation - it hasn't been
1121  updated for many years, and can't read recent versions of the .3d format.
1123* Strip documentation references to obsolete versions of MS Windows.
1125* doc/HACKING.htm: Update list of debian packages to install to build from git.
1127Changes in 1.2.20 (2015-06-26):
1129* aven:
1131  + When printing, use the top margin rather than the right margin to calculate
1132    the height of the printable area.  In practice, the two values seem to be
1133    the same or very similar by default.
1135  + Avoid assertion if the about dialog image fails to load.  Reported by Phil
1136    Maynard.
1138  + Optimise the size of the about dialog images.
1140  + Add support for reading terrain data which isn't in a .zip file.
1142  + Force a refresh after loading terrain data so that it gets displayed right
1143    away.
1145  + Make checks for terrain data extensions in zip files case insensitive.
1147  + If reading terrain data fails, always report an error and never try to
1148    display it.
1150* cavern: Allow clino readings in diving style data, suggested by Andrew
1151  Atkinson.  Currently these readings are ignored, but a future version will
1152  check that they're consistent with the angle given by the depth gauge and
1153  tape, and perform suitable averaging.
1155* Remove lingering traces of svxedit.
1157* configure: Fix to allow compiling without libav/ffmpeg, as was possible
1158  before 1.2.19.
1160* (Unix version): Install the filetype and aven application icons under
1161  /usr/share/icons/hicolor, which is where they're expected to be these days.
1163* (Unix version): Add %f to Exec in survex-aven.desktop.
1165* (Mac OS X version): Remove useless extra copy of about box images from OS X
1166  disk image.
1168* (Mac OS X version): Only ship one copy of each of the translations.
1170* (Mac OS X version): Reduce the size of the aven binary by disabling a load of
1171  libav features we don't use.
1173* (Microsoft Windows version): Reduce the size of the aven binary by disabling
1174  a load of libav features we don't use.
1176* (Microsoft Windows version): Update message files to fix a missing Chinese
1177  message in the installer.
1179Changes in 1.2.19 (2015-06-18):
1181* aven:
1183  + Fix exporting to GPX, KML and HPGL, which all failed to write the header to
1184    the exported file in 1.2.18.
1186  + Add exporting to Survex .pos format.
1188  + If the measuring line isn't currently active, pressing "Escape" will now
1189    exit full screen mode.
1191  + (Mac OS X version): Change the shortcut for full screen mode to be the
1192    standard Ctrl+Command+F (rather than Shift+Command+F which we have been
1193    using since 1.2.7).
1195  + (Mac OS X version): When we centre the view on the station this can
1196    generate a mouse move event, so clear the variable which says we are
1197    dragging before we process a left click on a station.  This avoids random
1198    rotations of the survey when clicking on a station, reported in #47 by Hugh
1199    St. Lawrence.
1201  + (Mac OS X version): Force use of a non-native toolbar to stop the toolbar
1202    icons from being rescaled and looking fuzzy.
1204  + (Mac OS X version): Remove code added in 1.2.18 which tries to set stop the
1205    toolbar icons from being rescaled, but which requires an unreleased version
1206    of wxWidgets, had a typo in, and doesn't actually seem to work anyway.
1208  + (Mac OS X version): Drop out of full screen mode if the mouse is mode to
1209    the top of the screen, since we can't seem to display the menu bar in this
1210    case like we do on other platforms.
1212  + (Mac OS X version): Enable aven's movie export feature.
1214  + (Mac OS X version): Enable wxDisplay when building wxWidgets to better
1215    support multi-monitor setups.
1217  + (Mac OS X version): Silence warning visible when aven is run from a
1218    terminal about a missing CFBundleTypeRole.
1220  + When reading terrain data from a .zip file, report an error if the .zip
1221    file is bad, or if it doesn't contain any terrain data we recognise.
1223  + Tweak error message in terrain reading code to distinguish two failure
1224    cases.
1226  + Add viewing angles and scale to footer, and shorten some of the other items
1227    to make room for this extra information.  (Fixes ticket #52, reported by
1228    Erin Lynch)
1230  + If the footer is wider than the printout width, scale down the font used
1231    so that it exactly fits; if the footer is narrower, than space out the
1232    items in in so it uses the full width.
1234  + If the saved size for aven's window exceeds the current display size
1235    (mostly likely because we're now plugged into a smaller monitor), then
1236    reduce the size of the window to fit the display.  If the saved size is <
1237    (480x320), increase it to at least that, as aven isn't usable in a smaller
1238    window.
1240  + Remove crude bodge which tries to pick a nicer initial window size when
1241    using wxWidgets without wxDisplay on a multi-monitor setup - aven now opens
1242    with the same size window it had when it was closed, so the initial size is
1243    only relevant on the first ever run.
1245* Assorted translation updates.  Notably Indonesian is at 100% again.
1247* Stop trying to catch and report signals.  The only real reason to do it is so
1248  we can say "Bug in program detected! Please report this to the authors"
1249  before we exit, but when the program crashes that's pretty obvious.  In aven
1250  we try to pop up a message box for this message, which may fail due to
1251  whatever caused the signal, while with the command line tools there's no
1252  great benefit over just letting the shell report the signal.
1254* Use pkg-config to probe for libav and proj, which sorts out the correct flags
1255  for building on OS X against a static install of libav.
1257Changes in 1.2.18 (2015-06-03):
1259* aven:
1261  + Add support for reading terrain data (from a zip file containing either an
1262    SRTM .hgt file, or an ESRI .bil file and associated metadata files), and
1263    rendering it as a transparent surface.
1265  + Remove actions from 'Orientation' and 'Rotation' menus which you wouldn't
1266    sanely want to perform from the menu.
1268  + Create a "Colour by" submenu of the "View" menu to house the various
1269    colouring options.
1271  + Add "Colour by Gradient" and "Colour by Length".
1273  + Make the button to dismiss the "About" dialog "OK" rather than "Close",
1274    which seems more logical, and also allows the dialog to be closed by
1275    pressing "Escape".
1277  + Destroy any existing clipping region before we write the page footer.
1278    Hopefully solves ticket #52, reported by Erin Lynch.
1280  + Don't round bearing and tilt angles to integers when printing and
1281    exporting.
1283  + Add passage export for EPS format.  (Partly addresses ticket #4)
1285  + Add JSON export.  This should be regarded as experimental, and the format
1286    is quite likely to change.
1288  + Pressing F6 now toggles the display of rendering stats, currently FPS
1289    (Frames Per Second) and the number of triangles in the terrain mesh.
1291  + Add a menu item and toolbar button to show the cavern log window if the
1292    currently shown survey data was processed by aven.  Reported by Hugh St
1293    Lawrence in #47, and by Dave Clucas and others previously on the list.
1295  + Add "Save Log" button to Aven's cavern log window.
1297  + In cavern log window, highlight "error" markers in red and "warning"
1298    markers in orange.
1300  + Rework code to read cavern's output.  In particular, we no longer mix
1301    buffered and non-buffered system calls.
1303  + Aven's support for reading colours and font sizes for printouts from
1304    print.ini has never worked - the contents of the ini files are ignored due
1305    to a bug which has been there since the code was added in 2005 - but nobody
1306    has ever complained.  So just strip out that code entirely - we should
1307    support setting the colours and font sizes, but a GUI interface for setting
1308    them would be better.
1310  + Fix to compile with a Unicode build of wxWidgets 2.8.  Reported by Bill
1311    Gee.
1313  + Take the width of the messages used above the compass and clino into
1314    account when calculating how much space to allow for them - now the labels
1315    won't overlap or be cut off in translations where they are long.
1317  + (Mac OS X version): Attempt to address the size of the toolbar icons.
1319* cavern:
1321  + Reject *fix with SDs which aren't all positive.  (fixes#2, reported by
1322    susscorfa).
1324  + Use the currently set units when outputting measurements in warnings,
1325    errors, and the stats at the end of the run.  Requested by Bill Gee.
1327  + Include column number when a *include file isn't found.
1329  + Show 'error' in front of error messages, like we show 'warning' in front of
1330    warnings.  Fixes #48, reported by Wookey.
1332  + Increase the threshold for warning that fore and back measurements differ
1333    from 2 SDs to 3 SDs.
1335* findentrances: If the 3d file specifies the coordinate system, use it.
1337* svxedit: Remove svxedit - while an editor with built-in knowledge of survex
1338  would be nice to have, svxedit doesn't really offer that, and it looks ugly
1339  in a modern desktop.
1341* If we run out of memory while reading a processed survey data file, include
1342  the filename in the error message.
1344* Many translation updates - notably Indonesian and Russian are now the two
1345  most complete translations.
1347* (Microsoft Windows version): Add code page 1252 mappings for fancy quotes.
1349* Transliterate gradient and infinity symbols if the current character set
1350  lacks them.
1352* Add SVG version of .plt icon.
1354* Manual:
1356  + Add complete list of quantities you can set SDs for.  Thanks for Wookey for
1357    highlighting that the previous list was incomplete.
1359  + Document averaging of a group of repeated readings.
1361  + Add a link to the sample data from the manual.
1363  + Remove references to contact addresses which are no longer there.  Remove
1364    offer to post people floppies, and references to a CD image which isn't
1365    available for download.
1367* Remove non-breaking spaces from the diffpos and extend manual pages, as they
1368  actually make the output formatting worse (presumably these used to work
1369  around a since-fixed bug in one of the docbook processing tools).
1371* doc/TODO.htm: Update.
1373* Fix to compile without warnings with 'g++ --std=gnu++11'.
1375Changes in 1.2.17 (2015-02-24):
1377* MacOS X version:
1379  + Update INSTALL file with current status.
1381  + now has a custom icon.
1383  + Add icons for all the filetypes supported.
1385  + Add Finder actions for .svx, .3d, .plt and .pos files.
1387  + aven: Hide the status bar and tool bar in Full Screen mode, as wx doesn't
1388    currently do this for us.
1390  + aven: Fix short-cut for toggling Full Screen mode.
1392  + aven: Make "About" menu item appear.
1394  + aven: Fix "Close" button in about dialog.
1396  + aven: Make custom cursors black with a white outline to match the standard
1397    OS X cursor.
1399  + svxedit: Now wrapped up in an application bundle as  It
1400    still doesn't really work like a standard app though - e.g. you can't load
1401    files from Finder (instead run and use File->Open), the font
1402    size of most menu items is wrong, the icon for the app is the wish icon
1403    rather than the svxedit icon, shortcuts use Ctrl not the Cmd key, and
1404    probably more.  I'd probably recommend using another editor (OS X comes
1405    with for example).
1407  + The documentation is now in a "Docs" directory alongside the apps, rather
1408    than in the rather less obvious "share/doc/survex" directory.
1410  + Default to building for x86_64, since all modern Macs are 64 bit.
1412  + Disable use of liblzma when building wxWidgets for OS X, which was
1413    preventing the build from working on OS X 10.6.8.
1415  + Download wx sources from SF via redirecting link.  Thanks to David A.
1416    Riggs.
1418  + Handle the mount point for the disk image containing a
1419    space.
1421  + Link with a static build of PROJ for doing coordinate system conversions.
1423  + Build wx with --disable-webview to avoid a compilation failure on OS X
1424    10.10.1.
1426  + Use wx-config --cc and --cxx to get the compilers to use for building
1427    everything else, as wx adds options to them which otherwise cause linking
1428    errors.
1430  + The diskimage (.dmg) file is now compressed with bzip2, which gives a
1431    smaller download.  This means OS X 10.4 is required, but we probably
1432    already need at least 10.5 because that's the minimum version which the
1433    wxWidgets build supports by default.
1435  + Remove unused files and copies of files from the diskimage.
1437* cavern: If the same leg is repeated consecutively, average the readings and
1438  treat as a single leg.
1440* dump3d: Report SEPARATOR used by the file being read.
1442* aven.svg: Fix visual glitch in SVG icon for aven.  Noted by David A. Riggs.
1444* aven:
1446  + Greatly reduce flicker when mouse is moved to the top of the screen in full
1447    screen mode and the menu bar reappears.
1449  + For export formats where scaling is supporting, aven now actually uses the
1450    scale specified in the export dialog (previously it ignored this and used
1451    1:500).
1453  + Reimplement animation so that it's based on angular change per unit of
1454    elapsed time, rather than averaging the time take for the last two scene
1455    redraws.  This gives smoother animation in the face of variable load and
1456    scene redraw time, and should be more consistent between platforms.
1458  + Switching to a point of the compass during auto-rotation now jumps straight
1459    there rather than the two animations fighting.
1461  + Reduce the maximum auto-rotation speed, as the previous limit was uselessly
1462    fast.
1464  + Disable stepping the rotation angle when animating (previously we only did
1465    when rotating).
1467  + Speed up start-up a bit - rather than loading icons from individual PNG
1468    files on disk, compile them into the aven binary.
1470* (Unix version): Add "MimeType" field to desktop files so that file
1471  associations work out of the box with modern desktop environments.
1473* Add start of Hungarian translation from Imre Balogh.
1475* Merge in many updates to the Russian translation from "vsuhachev".
1477* Assorted minor updates to other translations.
1479* Create scalable (SVG) versions of file type icons.
1481* doc/manual.sgml: Remove $Id and $Date markers, as they don't get expanded now
1482  we're using git.
1484* tests/: Improve test coverage in a few places:
1486  + Extend tests of fore and back sights to test calibration of the back
1487    compass.
1489  + Test "Can't calibrate angular and length quantities together" error.
1491  + Check that "*set names ." works when "." is also the decimal point.
1493Changes in 1.2.16 (2014-10-17):
1495* aven: Add KML export (stations only currently).
1497* aven: Allow measuring line to measure from anonymous stations.  (Fixes #44)
1499* aven: Fix corrupted names in exported files.
1501* aven: Fix error log window under wxWidgets >= 2.9 to include the system
1502  information before the first log message like it does under wxWidgets 2.8.
1504* cavern: Add support for "*cs JTSK" and "*cs JTSK03".
1506* tests/: Improve test coverage.
1508* Translation updates for many languages, plus the start of translations to
1509  Greek and Polish.
1511* Fix to build against wxWidgets 3.0 built with assertions disabled.  Reported
1512  by Martin Sluka.
1514* Fix warnings when compiling with clang (which is the default compiler on
1515  Mac OS X).  Reported by Martin Sluka.
1517Changes in 1.2.15 (2014-08-14):
1519* cavern: The *cs command now also supports "long-lat", "s-merc" (for "Web
1520  Mercator"), EPSG and ESRI codes, "eur79z30", "ijtsk" and "ijtsk03".  This
1521  means that we now support all the coordinates systems which Therion does,
1522  except for a few which don't have X=East and Y=North.  The documentation
1523  for *cs has also been improved.
1525* aven: We no longer persist full screen mode between runs - it's not a
1526  standard behaviour of desktop programs, and it's too easy to go into full
1527  screen mode from the menu and then not be able to get out again because you
1528  don't know the required key shortcut. (ticket#39)
1530* aven: When in full screen mode, moving the mouse to the top of the screen now
1531  makes the menu bar appear.  This provides a non-shortcut way out of full
1532  screen mode, as well as making it easier to perform other operations while in
1533  full screen mode.  The current implementation gives an annoyingly flickery
1534  transition, but hopefully we can improve this in future. (ticket#39)
1536* (MacOS X version): If built with wxWidgets >= 3.1.0 (which is still in
1537  development), we now call EnableFullScreenView() which improves the full
1538  screen mode experience on OS X 10.7 and later.
1540* img library: Improve documentation for img_ERROR_INFO.
1542* tests/: Ship some missing .out files and compare.tst.
1544* tests/: cavern.tst testcase back2 is now actually used.  Fix a bug in this
1545  testcase, and extend it to cover a variant of the situation reported as a bug
1546  in therion by Bill Gee to the therion list.
1548* (Linux version) survex.spec: Add run-time requirement on proj and proj-epsg
1549  for the survex package and on tk for the svxedit package.
1551Changes in 1.2.14 (2014-07-05):
1553* img library: Add ability to store a PROJ4 string describing the coordinate
1554  system in use in 3d v8 files.
1556* aven: If the 3d file specifies a coordinate system, then use it for exporting
1557  to formats which need to know (currently GPX).  If the input file doesn't
1558  specify the coordinate system, allow the user to enter a PROJ4 string in the
1559  export dialog.
1561* aven: You can now quickly zoom to a particular area by holding down the
1562  "Shift" key and dragging with the left mouse button to create a rectangular
1563  "rubber band box" around the area you wish to zoom to.  If you release the
1564  "Shift" key while still dragging, the box is centred on the start point
1565  rather than having one corner there.
1567* aven: Fix exporting of passage tubes in elevations and extended elevations
1568  - previously up and down were getting drawn across the page!
1570* aven: Fix "Cancel" to work on the print/export dialog, broken by changes in
1571  1.2.13.  (Reported by Brian Clipstone)
1573* aven: Fix the conditions on which the menu item "Cancel measuring line" is
1574  enabled - previously it was hard to actually cancel it via the menu.
1575  Reported by Hugh St Lawrence.
1577* aven: Fix wx assertion failures when showing hit test debug view on platforms
1578  such as 64-bit Linux.
1580* aven: When viewing from above, show "Plan" above the "clino" which indicates
1581  the tilt angle (instead of "Elevation -90°").
1583* aven: The extended font data now loads faster, and also uses less memory on
1584  64-bit platforms.
1586* aven: Dragging the vertical divider between the side panel and the 3D view
1587  now only updates when you finish the drag, as redrawing continuously just
1588  looks clunky except on an ultra-fast machine.
1590* aven: (German translation) Abbreviate "Blickrichtung" so it doesn't overfill
1591  the space available in the aven UI.
1593* cavern: Add a *cs command to allow setting the coordinate system for *fix
1594  commands, and the coordinate system used for processed survey data.  The
1595  latter is now stored in 3d v8 format files.
1597* cavern: Add support for 'L' flag (exclude from length) in Compass .dat files
1598  and handle it in the same way as the "DUPLICATE" flag in .svx files.
1600* cavern: If there's more than one *fix command with coordinates, still
1601  actually fix the second and subsequent ones, to avoid triggering bogus errors
1602  about unconnected surveys.
1604* cavern: If there's more than one *fix command with coordinates, report the
1605  station name of the previous one, plus the file and line number where it was.
1607* cavern: Fix handling of the rather contrived case of *fix with no coordinates
1608  followed by *solve and then another *fix with no coordinates not to access
1609  freed memory.
1611* dump3d: Report any specified coordinate system.
1613* doc/3dformat.htm: Update to document how the coordinate system is stored.
1615* (Microsoft Windows version): Include dump3d in the installer.
1617* Fix a compiler warning.
1619* Improve test coverage.
1621Changes in 1.2.13 (2014-05-15):
1623* aven: Fix --print option to wait for printing to happen before exiting
1624  (previously it would exit right after opening the print dialog, so you
1625  couldn't actually print anything out using it).
1627* aven: Increase the threshold for how close the pointer needs to be to a
1628  station from 5 pixels to 7 to try to help touchscreen users.  Reported by
1629  Hugh St Lawrence.
1631* aven: Add "fat finger" mode, toggled by pressing F2, to allow investigating
1632  if increasing the minimum pointer to station threshold helps Hugh's problems
1633  with using aven on a touch screen device.
1635* aven: The measuring line was unable to see stations which had just been
1636  revealed by toggling surface or underground legs on - this is now fixed.
1638* aven: Add "hit test grid debug" mode, which shows the hit test grid and how
1639  many entries are in each box (toggled by F3).
1641* aven: Pressing F4 now allows the user to toggle wxWidgets assertion messages
1642  off and back on.
1644* aven: Create the empty hit-test grid data structure lazily, to reduce start
1645  up time a little.
1647* cavern: Improve messages which talk about "tags" and/or "prefixes" in *begin
1648  and *end commands to instead talk about "survey names".
1650* cavern: For ages cavern has warned if you reentered a survey, but this
1651  warning was suppressed if it occurred at the same line of the same file as
1652  the survey was first entered, but this can only happen if you include the
1653  same survey file more than once, which isn't a sensible thing to do for a
1654  file with actual survey data in (you might reasonably do it to set up survey
1655  grade details or something like that).  The warning is now given in this
1656  situation too.
1658* cavern: After 5 warnings about reentering a survey we give up warning about
1659  it, but we used to keep reporting where the survey was originally entered -
1660  this secondary diagnostic message is now silenced when the main message is.
1662* (Microsoft Windows version): Compile C code with optimisation on.
1664* Add the start of a Russian translation, with messages take from therion.
1666* Minor translation updates to French.
1668* Fix compiler warning from GCC.
1670* Testsuite improvements:
1672  + Test that "..." anon station works.
1674  + cavern.tst: Check number of errors returned by all testcases which should
1675    fail and give an error count.
1677  + cavern.tst: Fix to actually fully test everything when builddir != srcdir.
1679Changes in 1.2.12 (2014-04-14):
1681* aven: Fix measuring line to show change in altitude rather than altitude
1682  itself (accidentally broken by changes in 1.2.11).  Reported by Brian
1683  Clipstone.
1685* aven: Fix printing when built with wxWidgets 3.0.
1687* aven: Several visual improvements to printouts:
1689  + Move the numbers below the scale bar down a little so that they don't
1690    overlap the scale bar ticks.
1692  + Set the clipping region after we draw the page border and info box to avoid
1693    clipping the border in print preview.
1695  + Tidy up the appearance of the compass and elevation arrow.
1697* aven: Fix to build with libav 10.  Reported by Moritz Muehlenhoff in
1698  <>.
1700* aven: Fix to build with older libav where avcodec_free_frame() isn't
1701  available.
1703* (Linux version) survex.spec: Update spec file used for building RPM packages.
1705* (Unix version): Add "Keywords:" entry to .desktop files.
1707* (Unix version): Enable large file support, mostly to support filing systems
1708  which return 64 bit inode values, such as CIFS mounts.
1710* (Microsoft Windows version): Only allow "A-Z" or "a-z" for driver letters,
1711  rather than any character which is a letter in the current locale.
1713* Various translation updates.
1715Changes in 1.2.11 (2014-01-28):
1717* aven: Fix wxWidgets assertion when double clicking on an anonymous station.
1718  Reported by Kevin Dixon.
1720* aven: Embed the font data for the first 256 Unicode characters for use in the
1721  survey pane into the compiled aven binary to reduce start up overhead.  Any
1722  additional characters needed are loaded from a data file only if/when a
1723  character >= U+100 is actually needed (as before).
1725* aven: Fix display of Unicode characters above 256 when there's a character
1726  <= 256 earlier in the same string.
1728* aven: Use the actual width of Unicode characters above 256 rather than
1729  assuming they are 16 pixels wide.
1731* aven: If full screen, don't show the side panel when a new file is opened
1732  (e.g. via Ctrl+O).
1734* aven: Don't give an assertion failure when showing passages for a cave with
1735  no vertical extent.  Reported by Jonny Prouty.
1737* aven: Change terminology in print dialog - say "legend" instead of "info
1738  box".
1740* aven: Add option to show the tilt angle as a percentage gradient.
1742* aven: Show the units (degrees, grads, or percent) for the tilt and bearing
1743  indicators.
1745* aven: All length units are now translatable.
1747* aven: Split log_fl_error helper function out of CHECK_GL_ERROR macro, which
1748  will reduce code size and also the number of deprecation warnings about
1749  gluErrorString on Mac OS X 10.9.
1751* (Microsoft Windows version): aven: Try to work around redraw issues related
1752  to the measuring line by redrawing the whole window, which doesn't seem to be
1753  measurably slower.
1755* cavern: If *units is used to try to set units for LEVEL, PLUMB, or POSITION,
1756  give an error rather than quietly ignoring the attempt.
1758* cad3d: Make cad3d remap control characters and spaces in station names when
1759  generating PLT output in the same way aven does.
1761* Various translation updates (particular thanks to Eric Madelaine and Dennis
1762  Baudys), including the start of a Bulgarian translation, with messages taken
1763  from Therion and elsewhere.
1765* (Microsoft Windows version): On Microsoft Windows 2000 and newer, use
1766  GetUserDefaultUILanguage() to get the UI language to use.  For older
1767  versions, continue to use GetUserDefaultLCID().
1769* (Microsoft Windows version): The Indonesian translation will now be used
1770  automatically when the system language is set to Indonesian.
1772* (Mac OS X version): Fix to build with wx 3.0.0 on OS X 10.9.  Thanks to David
1773  A. Riggs for his work on this.
1775* (Mac OS X version): Update script to use wx 3.0.0, and add a
1776  checksum check for the downloaded wx sources.
1778* Fix a lot of the compiler warnings when building with clang.
1780* doc/manual.sgml: Add missing quantities to the list documented as accepted by
1781  *units: LEFT, RIGHT, UP/CEILING, DOWN/FLOOR (missing entirely);
1783  mentioned in list of the units that can be set for them); COUNT (missing
1784  alternative name for COUNTER); DX/EASTING, DY/NORTHING, DZ/ALTITUDE
1785  (incorrectly listed as X, Y, Z).  Reported by Jonny Prouty.
1787* Test suite: Improve test coverage for cavern.
1789Changes in 1.2.10 (2014-01-15):
1791* aven: Fix assertion if two mouse buttons are held down at the same time.
1792  If dragging with more than one mouse button held down, releasing one causes
1793  another which is still held down to take effect.  Reported by Brian
1794  Clipstone.
1796* aven: If we fail to start the external editor when the user clicks on an
1797  error or warning from cavern, show an error box.
1799* aven: If the survey has a title, add it as a top-level <title> element to
1800  exported SVG files.
1802* aven: Escape '<', '>', and '&' in labels in exported SVG files.
1804* aven: In GPX export, set the <time> element to the datestamp from the 3d
1805  file.
1807* aven: Don't try to write the title if it isn't set or is empty when exporting
1808  GPX files.
1810* aven: Don't bother looking up the printer page setup info when exporting.
1812* (Microsoft Windows version): aven: Fix crash on "File->Print" or
1813  "File->Export" under Windows XP, reported by Brian Clipstone.
1815* (Microsoft Windows version): aven: Fix error dialog about an incorrectly
1816  encoded filename which could occur if run without being asked to load a file
1817  on startup.
1819* (Microsoft Windows version): aven: Compile with optimisation on.
1821* img library, aven: Although processed CMAP data files are often referred to
1822  as "CMAP .XYZ files", it seems that actually, the extension .XYZ isn't used,
1823  rather .SHT (shot variant, produced by CMAP v16 and later), .UNA (unadjusted)
1824  and .ADJ (adjusted) extensions are.  Since we've long checked for .XYZ, we
1825  continue to do so in case anyone is relying on it, but also check for the
1826  other extensions.
1828* img library: Add new "datestamp_numeric" field to struct img giving the
1829  datestamp as a time_t in UTC (or (time_t)-1 if there's no datestamp or we
1830  failed to convert it).  For .3d >= v8, this field is reliable.  We attempt to
1831  convert date strings in .3d <= v7 and CMAP XYZ files, but may get the
1832  timezone wrong.
1834* img library: Fix my_strcasecmp() to handle top-bit set characters better.
1836* cavern: Fix NULL pointer dereference when processing Compass DAT file without
1837  'SURVEY DATE:'.
1839* doc/manual.sgml: Update references to Survex 1.1 which should be to 1.2.
1841* doc/manual.sgml: Note the station length limit Smaps used.
1843* Fix some compiler warnings if built with glibc's fortify source feature
1844  enabled.
1846Changes in 1.2.9 (2014-01-08):
1848* Document --3d-version in cavern man page and the manual.
1850* aven: Fix compilation error in movie export code with recent libavi.
1852* aven: Fix warning on stderr when export a movie as MPEG.
1854* img library: In non-hosted mode, don't define GETC and PUTC if they're
1855  already defined, to allow easy overriding with getc_unlocked() and
1856  putc_unlocked() (which are significantly faster on Linux).
1858* img library: In non-hosted mode, check that int is at least 32 bits,
1859  and if not, use long.  In practice, platforms with 16 bit int are mostly
1860  obsolete, but it's not hard to be portable here.
1862* img library: Add test that img.c and img.h compile in non-hosted mode
1863  (regression test for issue fixed in 1.2.8).
1865* (Microsoft Windows version): aven is now built with wxWidgets 3.0.0.
1867* Update translations from launchpad and from existing similar messages.
1869* Fix some compiler warnings.
1871Changes in 1.2.8 (2013-10-29):
1873* cavern: Fix handling of anonymous wall stations ('..' by default) to
1874  implicitly set the SPLAY leg flag, as was intended.  Reported by Thomas
1875  Holder.
1877* cavern: Tweak .err file output not to lose the space in front of certain
1878  statistics when the value gets large.
1880* cavern: Eliminate redundant progress message when solving simultaneous
1881  equations.
1883* aven: Add a format drop down to the export dialog, and only show fields which
1884  are meaningful and supported for the currently selected export format.  The
1885  format defaults to that used most recently.  The "Elements" and "View" boxes
1886  have been swapped in the print and export dialogs as that layout works much
1887  better when the "View" box is hidden.
1889* aven: Changing checkboxes in the print or export dialog didn't work in 1.2.7
1890  - now works again.  Reported by Anthony Day.
1892* aven: Add GPX export (based on findentrances patch from Olaf Kähler).  In
1893  this release the projection which the survey coordinates are in defaults
1894  to the BMN M31 grid used in the Totes Gebirge in Austria.  On Unix, you
1895  can edit ~/.aven and add a new line setting 'input_projection' to a PROJ
1896  projection string.  The ability to specify this projection in a better
1897  way is coming soon.
1899* aven: New export options "Origin in centre" and "Full coordinates" - the
1900  latter fixes #10.  GPX and PLT output implicitly force "full coordinates".
1902* aven: The "Sketch" vector drawing program got renamed to "Skencil" some
1903  time ago, so update references.
1905* aven: Make the Presentation->Play menu item a checkbox, to avoid a warning
1906  with wxMSW 2.9.5.  Reported by Brian Clipstone.
1908* aven: Make right click in an empty presentation mark the current position and
1909  open it to edit, instead of crashing.
1911* aven: Update movie export code to work with latest libav API.  Reported by
1912  Sebastian Ramacher.
1914* aven: Improve reporting of errors during the process of exporting a movie.
1916* aven: Don't try to close the movie if we aren't producing one.
1918* aven: Fix assertion failure when double-clicking on the survey with wx2.9.
1920* aven: Fix to build with wxMSW 2.9.5.
1922* aven: Fix to build with wx 2.9.5 with wx2.8 compatibility disabled.
1924* cad3d: The "Sketch" vector drawing program got renamed to "Skencil" some time
1925  ago, so add a new --skencil option to specify this output format.  The old
1926  name (--sketch) is still recognised for compatibility.
1928* cad3d: Make --marker-size work for Skencil and SVG output.
1930* dump3d: Make --show-dates option show dates for XSECT.
1932* img library:
1934  + Fix to work once more when used outside of Survex (missing definition of
1935    max() macro and a bad call to free() in img_close() for a file opened for
1936    reading).
1938  + Use lround() instead of round(), and make the tests around whether we use
1939    the library function or the our fallback implementation saner.
1941  + Fix // comments in C code for portability to pre-C99 compilers which don't
1942    support these as an extension.
1944  + Can now be compiled as C++ as well as as C.
1946* (Microsoft Windows version): The installer is now built with a newer version
1947  of Innosetup, and includes translations for all the languages which Survex
1948  itself has any translations for.
1950* (Microsoft Windows version): aven is now built with wxWidgets 2.9.5.
1952* Minor translation updates.
1954* tests/ Distribute files for "normal_bad" testcase.
1956Changes in 1.2.7 (2013-07-27):
1958* Add support for anonymous stations, which are indicated by one, two or three
1959  separator characters - with the default separator of '.', that means '.',
1960  '..', and '...' are anonymous stations.  Single separator ('.' by default)
1961  is an anonymous non-wall point, double separator ('..' by default)
1962  is an anoymous wall point at the end of an implicit splay), and triple
1963  separator ('...' by default) is an anoymous point (with nothing special about
1964  the leg).  A new *alias command allows '-' to be mapped to '..' for
1965  compatibility with pocket topo: *alias station - ..
1967* New version 8 of the 3d format:
1969  + Supports new flags img_SFLAG_ANON and img_SFLAG_WALL.
1971  + New explicit file-wide flag for 'this is an extended elevation', rather
1972    than modifying the survey title to indicate this.
1974  + The survey prefix is often unchanged from one leg to the next, so use a
1975    spare flag to compactly indicate when there's no label change.
1977  + The data style of each leg is now stored.
1979  + The "processed at" time is stored as seconds since 1970 rather than a
1980    human-readable string.
1982  + Since 3d v8 features significant changes to the format, the format
1983    documentation for v7 and earlier has been split off into 3dformat-old.htm.
1985* img library:
1987  + New station flags img_SFLAG_ANON and img_SFLAG_WALL.
1989  + Handle .pos files containing unnamed stations - don't suck the next line in
1990    as the station name, and set img_SFLAG_ANON for them.
1992  + Repurpose the long unused fBinary parameter to img_open_write() as a flags
1993    parameter, and add img_FFLAG_EXTENDED to specify that this is an extended
1994    elevation, in place of appending " (extended)" to the title.  Internally we
1995    still append this to the title (and remove it upon reading) when writing
1996    3d v7 or earlier, but for the new 3d v8 format, this flag is stored
1997    explicitly in the file.
1999  + img.h: Add comments for the lists of "Leg flags" and "Station flags".
2001* aven:
2003  + We now require at least wxWidgets 2.8.0 - it was released over 6 years ago
2004    now, and the wx developers consider even 2.8 to be rather long in the
2005    tooth.  We stopped testing building with wxWidgets 2.6 some time ago, and
2006    formally dropping support for older versions allows a number of workarounds
2007    to be removed from the aven source code.  Also, features deprecated in
2008    wxWidgets 2.9 are no longer used in our code.
2010  + Don't run incremental search on every key-press, as on a slow machine the
2011    short initial search(es) will take a while but not be useful.  Instead only
2012    actually run the search when we're told there are no more key-presses
2013    queued up.
2015  + Implement support for including cross-section information in exported SVG
2016    and DXF files (ticket#4).  The DXF export is untested currently.
2018  + Show splay legs faded by default, with menu options to hide them or show
2019    them like other legs.
2021  + Speed up loading a .3d file with cross-sections by using a map to convert
2022    station names to positions.
2024  + In the cavern log window, don't highlight a file:linenumber if there's no
2025    message after it, which avoids highlighting the "Included from" lines
2026    wrongly.
2028  + Fix not to crash when trying to report an error while starting up.
2030  + (MacOS X version): Change the menu shortcut for "Full Screen Mode" to be
2031    the OS X standard shortcut Shift-Command-F (previously we used F11, but
2032    that's used by the desktop).
2034  + Add checks for errors when reading the font file.
2036  + Remove useless extra quoting when invoking vim to show the location of an
2037    error from cavern.
2039  + Include GL/gl.h before GL/glext.h (needed on Debian wheezy).
2041  + Use wxValidator to simplify keeping svxPrintDlg member variables and fields
2042    in the dialog in sync.
2044* cavern:
2046  + Demote errors about invalid dates to warnings, since we've accepted *date
2047    for ages without any checks on the value, and so existing datasets
2048    probably contain invalid dates and dates in other formats.  (ticket#19)
2050  + New *alias command allows '-' to be mapped to '..' for compatibility with
2051    pocket topo: *alias station - ..
2053  + We want to warn if there's a clino reading which it would be impossible to
2054    have read from the instrument (e.g. on a -90 to 90 degree scale you can't
2055    read "93" (it's probably a typo e.g. for "39").  However, the gradient
2056    reading from a topofil is typically in the range 0 to 180, with 90 being
2057    horizontal.  Really we should allow the valid range to be explicitly
2058    specified, but for now we infer it from the zero error - if this is within
2059    45 degrees of 90 then we assume the instrument can read between 0 and 180
2060    degrees.
2062  + If the survey isn't all connected, still run survey tree checks and report
2063    errors and/or warnings which might suggest typo locations.  Thanks to Kevin
2064    Dixon for the report which highlighted this issue.
2066  + Report a warning if *begin SURVEY has a separator character in SURVEY.
2068  + Report column numbers as well as line numbers for some cavern errors and
2069    warnings.
2071  + Adjust width of node stats table to fit longest count when there are more
2072    than 9999 of a particular order of node.
2074  + If the argument to *include has an opening double quote but the closing
2075    double quote is missing, then skip trying to open the file.
2077  + Move "Station X referred to just once" warning after non-existent survey
2078    check - if both fire, the non-existent survey error is likely to be more
2079    relevant.
2081  + We no longer follow an error for a bad reading in passage data with a bogus
2082    "End of line not blank" error, but instead check the remaining readings on
2083    the same line.
2085  + We no longer follow an error about OMIT for a required reading with a bogus
2086    "End of line not blank" error.
2088  + Report an error if the scale factor in *calibrate is zero - it doesn't make
2089    sense and probably means someone reversed the arguments to *calibrate.
2091  + Report the parent include files starting from the outermost, as that's more
2092    logical when there are multiple levels involved.
2094  + If we were expecting a numeric field and instead get something which starts
2095    with '+', '-', or '.' but which isn't a number, then fix the error to
2096    include that character in the token reported.
2098  + Simplify handling of quantity lists to only recognise 'DEFAULT' as the
2099    first item.
2101* cad3d: Check for errors from img_rewind() and report them.
2103* dump3d:
2105  + Build, install and package dump3d as standard - it's useful for grabbing
2106    info from 3d files in scripts.
2108  + Add --show-dates option.
2110  + Show only 2 decimal places on coordinates and passage dimensions.
2112  + Report the data style of legs.
2114  + Report if the file is an extended elevation.
2116  + Report img_STOP as STOP rather than CODE_0xffffffff.
2118* Test suite:
2120  + cavern.tst: Fix equatenosuchstn testcase (added in 1.2.6) to normalise the
2121    expected output so it passes reliably.
2123  + cavern.tst: Run diffpos <expected> <actual> so the reports of 'Added' and
2124    'Deleted' stations upon failure are the more natural way round.
2126  + Add more testcases, expand some existing testcases, and add expected output
2127    for more.
2129* (Microsoft Windows version): Use wx-config's --cc and --cxx flags to find the
2130  appropriate C and C++ compilers to use, and link mingw build statically to
2131  avoid needing the libgcc DLL (which newer GCC seems to have by default).
2133* (Unix version): When determining the character set for command-line tools,
2134  check environmental variable LANG after LC_ALL and LC_CTYPE.
2136* When determining the language, check environmental variable LC_ALL before
2137  LC_MESSAGES and LANG (but after SURVEXLANG).
2139* If we don't find the message file, only give an error if it was specified
2140  with SURVEXLANG, since that is an explicit instruction to Survex, whereas
2141  LANG, LC_ALL and LC_MESSAGES are essentially system "preferred locale"
2142  settings.
2144* There are a handful of hard-coded English message strings for reporting
2145  errors trying loading message files, etc.  These are all now ASCII, as if we
2146  fail trying to open a message file, it's more likely the encoding isn't
2147  set correctly.
2149* Prune strings we are no longer using and are probably unlikely to use again
2150  into a new file po_codes_dead, so that translators don't get presented with
2151  them to translate.
2153* Merge lots of translation updates.  Most translations are now complete or
2154  close to complete.
2156* Add start of Indonesian translation from Arief Setiadi Wibowo.
2158* Fix various compiler warnings when building from source.
2160* Include scripts gdtconvert and gen_img2aven in the source distribution.
2162Changes in 1.2.6 (2012-02-23):
2164* (Mac OS X version): Fix so that cavern finds its messages when run by aven.
2166* (Microsoft Windows version): Include JPEG images for aven in the installer
2167  package (ticket#35).
2169* cavern: If we have a reference to a station in a non-existent survey, give a
2170  helpful error rather than saying the station hasn't been exported from the
2171  survey.  (Bug reported by Martin Green via email)
2173* aven: Fix to build with a non-Unicode wxWidgets library.  Patch from Olaf
2174  Kahler.
2176* findentrances: Add findentrances utility from Olaf Kahler which produces a
2177  .gpx file with waypoints for entrances.  This needs libproj so is disabled
2178  by default for this release - to enable it install the development stuff for
2179  libproj and build survex with:
2181      make FINDENTRANCES=findentrances
2182      make install FINDENTRANCES=findentrances
2184* dump3d: Add support for showing img_ERROR_INFO items.
2186* doc/3dformat.htm: Merge in some improvements from Mike McCombe.
2188* Incorporate a French translation from launchpad I'd previously copied the
2189  English version of by mistake.  Attempt to correct mistranslation of "survey
2190  file".
2192Changes in 1.2.5 (2012-01-03):
2194* aven:
2196  + The survey tree in the left panel is now in sorted order once more.
2198  + No longer fails with an assertion if used for a long time (we were leaking
2199    an OpenGL list each time one had to be regenerated).
2201  + Now builds with newer FFmpeg library.
2203  + Draw measuring line in front of the indicators rather than behind them.
2205  + Loading a new file (or reloading the current one) no longer invalidates
2206    the OpenGL lists for the compass and clino, so will be a fraction faster.
2208* Improve handling of attempts to look up translated messages before the
2209  message subsystem is fully initialised (which only happens if there's an
2210  error early on).
2212* Improve the survex(7) man page text, and fix it to be marked as section 7 in
2213  the man page source as well as in the filename.
2215Changes in 1.2.4 (2012-01-01):
2217* aven:
2219  + A change in 1.2.3 meant that aven tried to use OpenGL before it was
2220    initialised, which doesn't cause problems in some machines, but causes aven
2221    to abort on others.  This is now fixed, and there's a check in place to
2222    help avoid similar issues in future. (ticket#34)
2224  + Always use metres or feet for the depth colour key, and chose a consistent
2225    precision by looking at the depth range. (ticket#30)
2227  + Show the depth units below the colour bar rather than after every value.
2229  + When zooming way in, stay in metres rather than switching to cm.
2231  + On the scale bar, say “1 mile” rather than “1 miles”.
2233* Translation updates for Catalan, French and Slovak.
2235Changes in 1.2.3 (2011-12-31):
2237* Fix to build with wxWidgets 2.9.2.
2239* (Mac OS X version):
2241  + Processing .svx files from aven now works.
2243  + Remove spurious blank lines from the licence text in "Get Info".
2245  + Don't create the help menu at all, as it is empty (because the "About"
2246    entry goes elsewhere) and sometimes seems to appear in the UI.
2248  + INSTALL.OSX: Update to reflect current status.
2250* aven:
2252  + Fix Y coordinates of surface surveys on printouts.  (Closes #32)
2254  + Improvements to text plotted on the survey pane:
2256    - Support plotting Unicode character points > 256 by lazily loading the
2257      data for them from the font file and plotting them with a direct call to
2258      glBitmap(), which is slower but doesn't require a display list per
2259      character.
2261    - Adjust the spacing from fixed width to putting a one pixel gap either
2262      side of each one character (so two between adjacent glyphs).  Mostly this
2263      reduces the horizontal width, but it adds a pixel for characters like "m"
2264      and two in a few cases.
2266    - Fix .pixelfont file generation to correctly handle characters wider than
2267      8 pixels.
2269  + Fix expected cross shape so don't always reject using texture mapping to
2270    draw crosses.
2272  + As we read a survey file, eliminate tubes consisting of zero XSECTs as well
2273    as those consisting of just one.  Previously we would trip over the empty
2274    tube later.  Such tubes can for example be created by extend if a splay shot
2275    is the start or end of a tube.
2277  + Make the green colour used for entrances in the survey tree the same
2278    (slightly darker than before) green used for the entrance blobs.
2280  + Report the version of the library we're actually running with if built
2281    against wx >= 2.9.2.  Make it clear that the version reported is the
2282    version *built* with for wx < 2.9.2.
2284* extend:
2286  + Copy the end markers for passage tubes.
2288  + Preserve left and right data for tubes (previously they were set to -1.0
2289    which means "no info").
2291* img library: Fix incorrect comment in img.h which claimed that img_XFLAG_END
2292  was no longer used - it certainly is!
2294* Use curly double quotes instead of "`" and "'" to quote filenames, etc in
2295  messages, and curly single right quote instead of straight ASCII apostrophe.
2296  Fall back to using straight ASCII versions if we can't represent them in the
2297  current character set.
2299* Translation updates for Catalan, French, Slovak and Spanish.
2301* Test suite:
2303  + Add test coverage for interleaved diving data.
2305  + Add testcase for diving data with topofil-style distance.
2307Changes in 1.2.2 (2011-10-06):
2309* aven:
2311  + Replace the textured-mapped font drawing with an approach based on
2312    glBitmap.  This doesn't suffer from the character alignment issues which
2313    the textured-mapped fonts had, and is actually significantly faster on some
2314    machines.  The current font used is (mostly) fixed-width, but this isn't an
2315    inherent limitation - it was just the easiest font data to convert to a
2316    usable format.
2318  + Fix assertion failure due to rounding differences on loading certain .3d
2319    files.  (ticket#26)
2321  + Fix assertion failure when turning on 3D passages if they stick out higher
2322    or lower than any station.  (ticket#29)
2324  + Fix grid not to disappear when blobs are turned on and blobs are drawn
2325    using lines.
2327  + If a degree sign isn't available in the character set in use, transliterate
2328    it to 'dg' rather than skipping it.
2330  + Fix message which should have been a degree sign but got lost in the format
2331    change for 1.2.0 and then got reassigned in 1.2.1.  Externally, this means
2332    that bearings in the status bar now have a degree sign after them if they
2333    are in degrees rather than nothing (1.2.0) or "&Hide Compass" (1.2.1).
2335  + Fix print dialog to calculate the scale required for "One page" right
2336    before it calculates how many pages are required, so we don't end up
2337    something other than 1x1 being shown when the user changes settings.
2339  + Update the calculations for picking a scale and for deciding how many
2340    pages are needed to take into account the change in info box height made
2341    in 1.2.1.
2343Changes in 1.2.1 (2011-10-04):
2345* Translation updates for US English.
2347* aven:
2349  + Rename the "depth bar" to "colour key" in documentation, menus, etc since
2350    it now shows colours for dates and errors as well as depths.
2352  + In the colour key for "colour by date", change "No info" to "Undated".
2354  + Remove the dark grey background from the colour key and just put a single
2355    pixel black border around the colours.  This is more in keeping with the
2356    other controls, and means the colours are now on a black background so more
2357    visually similar to the survey legs.
2359  + Move the colour key's "Undated"/"Not in loop" entry down a little to
2360    improve the appearance.  Make each section a pixel taller.
2362  + Allow "Colour by X" to be selected even if there's no data for X or only a
2363    single value of X used (the colour key is much smaller in these cases, and
2364    does still provide some useful information).
2366  + Fix incorrect calculation of depth colouring for survey legs which straddle
2367    a depth band boundary.
2369  + The scale bar, compass, clino, and colour key now all have right click
2370    menus which allow related actions to be performed (especially handy in
2371    full-screen mode).
2373  + Improve the font used on the survey pane - it now contains the '-'
2374    character (so the clino now shows negative angles as negative, and dates
2375    in the colour key are now hyphenated).  Also the spacing and alignment
2376    are a little better, though still not perfect.
2378  + PLT file export now handles spaces and control characters in station names
2379    by escaping them with '%' as in URLs.
2381  + Pressing "Enter" on a station in the tree control now centres the view on
2382    that station.
2384  + The scale bar is now cached in an OpenGL display list since it often gets
2385    redrawn exactly the same - for example, when rotating, panning, etc.
2387  + Pressing "F5" forces all cached OpenGL drawing lists to be invalidated and
2388    then forces a refresh of the survey pane.  This is intended as a debugging
2389    aid - if pressing F5 changes the display at all then there's a missing case
2390    where a list should have been invalidated (please report if you find such
2391    a case as it is a bug).
2393  + We now automatically track which OpenGL display lists need to be
2394    invalidated on window width or height changes.
2396  + Increase scale bar maximum width from 65% of the window width to 75% as it
2397    was in 1.0.x (except that if that would overlap the clino we now reduce
2398    that proportion down until it reaches 50%).  Make the limit of zooming in
2399    the same as in 1.0.x.  (ticket#23)
2401  + (Linux version): Previously wxGTK didn't really handle showing a dialog if
2402    the application was fullscreen (the dialog got opened under the main
2403    window!)  To work around this, aven would switch out of full screen mode
2404    temporarily while showing a dialog.  This case works properly with recent
2405    wxGTK, so disable our workaround with versions we know work.  Also, apply
2406    the workaround only for wxGTK, not everywhere except on Microsoft Windows
2407    as there's no reason to think we need it for other platforms.
2409  + Grey out the "View North" action when we're already viewing North, and
2410    similarly for other compass points.
2412  + (Mac OS X and Microsoft Windows versions): Fix missing newline to OpenGL
2413    info in the "About" dialog.
2415  + Fix to set the correct filename on the root of the survey tree - previously
2416    the filename of the previous file loaded was used!
2418  + The movie export code now works with newer versions of the FFmpeg libraries
2419    as well as still working with older versions.
2421  + Fix mixed up messages - the print dialog now says "View" on the left
2422    subgroup of controls rather than some unrelated message.
2424  + On printouts, combine the "Plan View"/"Elevation" info box field with the
2425    field which gives the bearing and reduce the height on the info box by the
2426    removed field, so it's now 3cm for plans and elevations, as for extended
2427    elevations.  Report the tilt angle for tilted elevations which it seems has
2428    been missing for ages (it's not in recent 1.0.x either).
2430  + Tweak the exact positioning of informational text on printouts to look
2431    nicer and make better use of the available space.
2433  + Add keyboard mnemonics to the "Plan" and "Elevation" buttons in the print
2434    dialog.
2436  + Make the sign of the tilt angle for printouts consistent with the sign
2437    shown by the "clino" in the survey pane.
2439  + In the "Print" dialog, when in plan view disable the "Plan view" button,
2440    and similarly for the "Elevation" button.
2442  + (Microsoft Windows version): Sort out appearance of custom cursors.
2444  + If a label isn't valid UTF-8 or CP1252, fall back to ISO8859-1.
2446  + (Mac OS X version): F11 puts aven into full screen mode, but apparently
2447    you can't get out again easily, so add code to explicitly check for F11
2448    being pressed and toggle full screen.
2450* (Linux version): Fix the RPM .spec file for where man pages now get installed
2451  and package aven.svg and the vim support files.  (Fixes from James Begley)
2453* "make check" now performs several checks on the translation files.
2455* More messages are now available to be translated.
2457* cavern: Fix reporting of ranges of survey coordinates, which was broken by
2458  the message handling changes in 1.2.0.
2460* Fix warning when compiling with GCC.
2462* INSTALL: Mention building wxWidgets with --enable-unicode.  Mention using
2463  sudo for installing on Unix.
2465* In the manual, replace the instructions for building from source with a
2466  pointer to the clearer instructions in INSTALL.
2468* In the manual, make it clear that installing with administrator rights
2469  also applies to newer platforms than XP.
2471* doc/TODO.htm: Update.
2473Changes in 1.2.0 (2011-09-20):
2475* Translation updates for Catalan, French, Romanian, Spanish, Slovak, and US
2476  English.
2478* tests/smoke.tst: aven no longer requires an X display for --help or
2479  --version, so replace skip of this check with a check that this remains the
2480  case.
2482* We now use the standard .po and .pot file formats for storing translations
2483  (rather than the Survex-specific messages.txt format), and then translate
2484  these into Survex's .msg format.
2486* (Unix version): Move survex man page to section 7 (since it isn't documenting
2487  an actual command).
2489* (Unix version): Write each generated man page to a temporary file, then
2490  atomically rename, to avoid leaving an empty or partial man page behind if
2491  docbook-to-man dies (1.1.16 had an empty cad3d.1, and we want to avoid a
2492  recurrence of that).
2494* (Unix version): Default to installing docs into /usr/share/doc/survex rather
2495  than /usr/doc/survex.
2497* aven:
2499  + Fix handling of accented characters in the survey pane.
2501  + Aven icon redrawn in SVG format - it's now a vector image which looks
2502    nicer at larger sizes.
2504  + Explicitly request double-buffering, which seems to be needed for systems
2505    with GLX >= 1.3.
2507  + Fix crash while trying to load certain .3d files.
2509  + Movie export code updated to work with more recent versions of FFmpeg.
2510    Currently this is disabled in Microsoft Windows builds, pending getting the
2511    required libraries set up for building releases.
2513  + Reporting of errors during movie export improved.
2515  + Force playback speed to "x1" during movie export.
2517  + Use stock IDs for buttons where appropriate - such buttons may now be
2518    rendered with icons on some platforms.
2520  + If a label isn't valid UTF-8, treat it as CP1252 (the Microsoft superset of
2521    ISO8859-1).
2523  + (Unix version): Remove special handling for toggling "full screen" on wxGTK
2524    as it's no longer required with modern versions.
2526  + Don't redraw the survey on every mouse movement in the survey pane unless
2527    the measuring line is (or just was) active.  (ticket #17)
2529* cavern:
2531  + Drop "non-fatal" from the report of how many errors there were at the end
2532    of the run - it just confuses users - we won't even get here if there's a
2533    fatal error!
2535  + Add --3d-version option to allow the user to specify the version of the 3d
2536    format to output.  (ticket#21)
2538* img library:
2540  + Make the highest and lowest valid values for img_output_version available
2541    in img.h as IMG_VERSION_MIN and IMG_VERSION_MAX.
2543* (Mac OS X version): Fix script to check where the temporary
2544  volume actually gets mounted.  Fix URL for downloading wxWidgets.
2546Changes in 1.1.16 (2011-05-16):
2548* Translation updates for German, Spanish, Italian, Portuguese, Brazilian
2549  Portuguese, and US English.
2551* Use horizontal ellipses character rather than '...' and right arrow character
2552  rather than '->' where these characters are available.
2554* (Unix version): Link with -lGL, if it exists, to support linking with gold or
2555  GNU ld --as-needed (Debian bug #615781).
2557* img.c:
2559  + Fix code typo for IMG_API_VERSION == 0 case.
2561  + Fix code typo in code used when IMG_HOSTED isn't defined.
2563* doc/TODO.htm: Remove entries which have now been done.
2565* (Microsoft Windows version): aven: We now include all the available
2566  translations for messages from wxWidgets, which means that standard widgets
2567  will appear translated where available even if Survex messages aren't
2568  translated.
2570Changes in 1.1.15 (2010-10-15):
2572* aven:
2574  + In the cavern log window, change the "Rerun" button to "Reprocess" to
2575    follow terminology in manual and elsewhere.  Fixes ticket#15.
2577  + When displaying output from cavern, don't update the window after every
2578    line, but only when we don't have data from cavern pending.  Hopefully
2579    addresses ticket#12.
2581  + If we aren't using GL_POINTS for blobs, draw them using a series of
2582    abutting lines rather than with gluDisk which is faster and gives a
2583    consistent shape.
2585  + Check whether blobs and crosses actually render correctly as points/point
2586    sprites, and if they don't, fall back to drawing them with lines.  The
2587    best method is cached on disk, and rechecked automatically if the graphics
2588    hardware is changed or the drivers upgraded.
2590  + Fix non-USE_FNT case to work again (it's limited to ISO-8859-1 characters
2591    though, so we still enable USE_FNT by default).
2593  + Don't offer "All files" wildcard in presentation save dialog.
2595  + (Microsoft Windows): Handle filenames with non-Latin1 characters in in
2596    more places.
2598  + (Microsoft Windows): Quote filenames with spaces and metacharacters in
2599    when running cavern from aven.  Fixes ticket#11.
2601* editwrap: (Microsoft Windows): Handle filenames with non-Latin1 characters.
2603* diffpos: Handle files with duplicate labels in better - extend generates
2604  duplicate labels when it breaks a loop.
2606* Enable eswap-break testcase now that diffpos handles duplicate station names.
2608* New v7 of .3d format which stores survey dates as number of days since
2609  January 1st 1900, so we now support dates from 1900-2078 (rather than
2610  1970-2037) with a smaller file size.  The img API is now versioned - you
2611  can select the new "version 1" by compiling with -DIMG_API_VERSION=1, which
2612  gives the survey dates in days in days1 and days2 instead of as time_t
2613  values in date1 and date2.  Fixes ticket#14.
2615* Consistently use rather than - the
2616  former has been the canonical name for some time, with just
2617  redirecting to it.
2619* (Unix version): Use unlocked file I/O if available, which can be much faster
2620  in some cases (we don't need the locking as we don't do multithreaded file
2621  I/O).
2623* (Mac version): Fix compilation failure due to clash with Point in Mac OS X
2624  headers.
2626* (Mac version): now works again.
2628* Most tests weren't actually running any testcases (looks like a sh
2629  portability issue).  This is now fixed, and fortunately all tests still pass.
2631* Include the extra .isl translation files for Innosetup in the source archive.
2633Changes in 1.1.14 (2010-07-26):
2635* Restore compatibility with wxWidgets 2.6 (1.1.13 required wxWidgets 2.8).
2637* aven:
2639  + After processing survey data, if there were warnings or errors, add a
2640    "Rerun" button to allow easy reprocessing after fixing problems.  If there
2641    were only warnings, also add an "OK" button to allow moving on to viewing
2642    the processed survey data (fixes ticket#13).
2644  + Optimise updating of the cavern log window (hopefully fixes ticket#12).
2646  + Fix links in cavern log window to link from exactly '<file>:<line>' (and
2647    not the ': ' after), and to make the title for the terminal the
2648    warning/error message.  Avoid false positives by checking that '<line>' is
2649    a number.
2651  + Don't double escape the contents of href and target in links in the cavern
2652    log window.
2654  + Improve handling of the splitter window, fixing behavioural glitches in
2655    various cases.
2657  + Highlight stations matching any current search when a file is loaded.
2658    (ticket#9)
2660  + (Mac version): Fix build issue due to Mac OS X polluting the global
2661    namespace with its own "Point" class.
2663  + (Unix version): The Gnome print dialog has its own preview window so
2664    suppress ours if using the Gnome one.
2666  + (Unix version): Link aven with -lGLU which SuSE Linux needs.
2668  + (Microsoft Windows version): Fix handling of a double-click on the survey
2669    tree when built with wxWidgets >= 2.8.11.
2671* cavern: Report relevant file and line number for three warnings which didn't
2672  give them before.
2674* (Unix and Mac versions): configure: Update the wx-config probing code -
2675  wxmac-config etc aren't present with newer wxWidgets versions so there's no
2676  point looking for them now.
2678* (Mac version): This script builds a diskimage with Survex in
2679  for easy installation.  Update it to work with the latest Survex versions
2680  (use WX_CONFIG not WXCONFIG; use a Unicode build of wxWidgets; if building a
2681  private wxWidgets, use 2.8.11 not 2.7.0-1).
2683* manual:
2685  + Correctly capitalise "GTK".
2687  + Note that on Linux we only regularly test builds with the GTK+ version
2688    (change taken from 1.0).
2690* Fixed the cad3d man page, which was an empty file in 1.1.13.
2692Changes in 1.1.13 (2010-06-16):
2694* Say "wxWidgets" instead of "wxWindows" consistently.
2696* img.c: Fix small memory leak (filename_opened member).
2698* cad3d, aven: Fix export to SVG when a label contains a '%' character.
2700* aven:
2702  + wxWidgets 2.6.0 or newer is now required.
2704  + A "Unicode" build of wxWidgets is now supported.  An "ANSI" build may still
2705    work but hasn't been tested recently (all packaged versions of wxWidgets
2706    seem to be Unicode now).
2708  + Fix potential uses of uninitialised variables which may have been causing
2709    occasional glitches when loading a file on start-up.
2711  + Improvements to the handling of the font used for plotting labels and other
2712    text on the survey pane:
2714    - Loading the font file is more efficient.
2716    - Character spacing is improved.
2718    - Default font is now anti-aliased.
2720  + "About" dialog:
2722    - Add "Copy" button to copy the system info to the clipboard for easier
2723      bug reporting.
2725    - List OpenGL extensions last, since there are usually lots of them with a
2726      modern gfx card.
2728    - Fix 100% CPU usage while the "About" dialog is open.
2730  + Processing .svx files:
2732    - Passing a .svx file on the command line now works better.
2734    - Put the survey data log window in a splitter in the usual frame rather
2735      than opening a separate frame for it.
2737    - Auto-scroll the log window until we've reported a warning or error.
2739    - Fix small memory leak.
2741  + The presentation filename now defaults to using the basename of the
2742    currently loaded dataset, but we always prompt before we first save with
2743    such a name.
2745  + Reduce memory usage when saving a screenshot.
2747  + Allow "Toggle Fullscreen" to work even if no survey is loaded now that we
2748    persist the window size (and maximised or fullscreen state) between
2749    invocations.
2751  + Fix reporting of OpenGL errors.
2753  + Fix glitches when tilting while looking East.
2755  + Added Portuguese and Slovak translations of wxWidgets messages.
2757* Documentation:
2759  + Rationalise manual formats - replace PostScript with PDF and drop RTF.
2761  + Drop the "alternative manual formats" self-extracting zip file - people
2762    will generally just want one of the formats, so downloading several
2763    together isn't very useful.
2765  + 3dformat.htm: Update for v6 format (thanks to Mike McCombe).
2767  + GPL.htm: Replace HTML version of licence with a link to the version on
2768    the FSF website.
2770  + ChngeLog.htm: Stop generating an HTML version of the ChangeLog - it's too
2771    low level to be of interest to non-developers, and developers can look at
2772    the source code.
2774* (Unix version): configure: New preferred name for specifying wx-config script
2775  is WX_CONFIG.  WXCONFIG still supported for compatibility.
2777* (Linux version): Source RPM package dropped as you can just build an RPM
2778  package from the source tarball.
2780* (Microsoft Windows version): The installer is now created with a newer
2781  version of InnoSetup, which gives a 10% smaller download.
2783Changes in 1.1.12 (2007-02-07):
2785* aven:
2787  + Remember the window size or maximised/fullscreen state between invocations.
2789  + Add options dialog to "Export" similar to the one for "Print".
2791  + The "number of pages required" in the print dialog now updates when you
2792    change what is to be shown (underground legs/surface legs/station
2793    names/crosses).
2795Changes in 1.1.11 (2006-11-25):
2797* Updated Czech, Spanish, and Slovak translations.
2799* (MacOS X version): Assorted OS X specific tweaks and fixes.
2801* aven:
2803  + Pick a smaller and clearer font for labels.
2805  + Fix character spacing.
2807  + Tweak display of bearing and elevation angles to look nicer with
2808    proportional fonts.
2810  + Use the title from the 3d (or plt, etc) file for the window title
2811    rather than the filename.
2813  + Show distances to 2 decimal places rather than the nearest integer.
2815  + Only consider underground legs when calculating the depth bands and
2816    depth colouring.
2818  + Add "Colour by Error".
2820  + Add entry for "white" in date and error keys.
2822  + When setting the view to a single point, don't change the scale.
2824  + If reloading the same file, don't change the view
2826  + Fix filetypes selector in open dialog.
2828  + Fix the charset we use for aven in certain cases.
2830  + Call msg_init before using msg_lang or it won't ever be set!
2832  + Pass wx the full language code to initialise the C library locale.
2834  + Fix bug in generating prefix tree view which could lead to a bogus
2835    leading dot on some survey names (bug probably introduced in 1.1.10).
2837  + "New Presentation" now ensures that the side panel is open
2839  + Fix updating of cached opengl lists when the view is reset to the
2840    default.
2842* Ignore LANG if it starts with a digit to avoid problems with bogus value for
2843  LANG which AutoCAD installation seems to set on MS Windows.
2845* (Unix version): configure: Allow SGMLTOOLS and DOCBOOK_TO_MAN to be
2846  specified.  Either/both can be set to ":".
2848* dump3d: Report unknown (to dump3d) codes returned by img.
2850* img library: Flag all stations as underground in the old "ASCII" .3d format.
2852Changes in 1.1.10 (2006-07-14):
2854* aven: Clicking on a survey name in the survey tree now highlights it in
2855  the map view.  Double-clicking zooms the view to show the clicked survey
2856  highlighted.  Clicking the root clears the highlighting and double-clicking
2857  the root restores the default view.  To expand/collapse a branch, click
2858  on the "[+]" or "[-]" icon to the left of the survey name.
2860* aven: The measuring line can now measure to anywhere in plan or elevation
2861  view (not just to a station!)  In plan view the horizontal distance and
2862  bearing are shown, while in elevation view the vertical distance is shown.
2864* aven: Moving the mouse over a station in the survey view now highlights
2865  that station in the survey tree (though it may not be visible if the
2866  survey(s) it is in aren't expanded).
2868* aven: Clicking on a station to centre the view now moves the mouse pointer
2869  to the new location of the station (except on Mac OS X where this isn't
2870  allowed).
2872* aven: Fix which presentation toolbar buttons are shown as depressed.
2874* Fix infinite loop reading 3d files with LRUD data (bug introduced in 1.1.9).
2876* vim files are now installed with the correct paths (bug introduced in 1.1.9).
2878Changes in 1.1.9 (2006-07-04):
2880* (Unix version): Install desktop files for aven and svxedit contributed to the
2881  Ubuntu package by Phil Bull, and corresponding pixmaps.
2883* Fix img to filter out cross-sections which don't match the subsurvey (if
2884  specified).  The API now returns img_XSECT_END to mark the end of a
2885  passage rather than setting a flag on the last img_XSECT of the passage.
2887* Enhance integration with the vim editor - this can now colour .err files, run
2888  cavern from vim and parse error output, and run aven from vim.  Tweak the
2889  existing vim mode for .svx files to fix a few minor bugs and add support for
2890  the new "*data passage" style.
2892* aven: fix drawing of the "blob" end of the measuring line on graphics cards
2893  which can't draw large enough blobs for us.
2895* aven: sort out confusion about what encoding everything is in which means
2896  that the distance measured by the measuring line actually gets displayed
2897  and also fixes problems with empty menu items in non-English locales in
2898  some cases.
2900* aven: redraw grey background after a menu is closed over the aven window
2901  with no survey loaded.
2903* aven: fix bug which caused printing to crash (introduced in 1.1.8).
2905* aven: avoid crash on some machines when opening "About" dialog before having
2906  loaded a survey.
2908* aven: Translate "Plan" and "Elevation" buttons in print view dialog.
2910* (Unix version): aven: Fix character set handling of cavern output.
2912* cavern: Report an error if a cross-section is specified for a station which
2913  doesn't exist.
2915* Updated French and Italian translations.
2917* (Unix version): aven: Fix "Can't open message file `en_US' using path
2918  `${prefix}/share/survex'" error.
2920* Fix bug in 3d file reading on 64 bit platforms when used in STANDALONE mode
2921  (doesn't affect Survex itself, but other applications which use img.c should
2922  update their copy).
2924* (Unix version): Add checks that wxWidgets is a non-unicode version (wx 2.6
2925  and later are caught by configure, whereas older wx versions are caught when
2926  trying to compile).
2928Changes in 1.1.8 (2006.06.30):
2930* Drop support for building with wxWidgets versions prior to 2.4.0
2931  (which was released on 2003-01-07).
2933* aven: Printing through aven now uses settings from the "[aven]" section
2934  of print.ini, and support for hierarchical sections (using "like=")
2935  has been disabled.
2937* aven: Change mouse actions to be compatible with those in Survex 1.0.
2938  The mousewheel now zooms in/out (it doesn't do anything in 1.0) and
2939  left drag is now smart about not rotating and zooming at the same
2940  time.
2942* aven: Highlighting stations now happens as you type, and pressing
2943  "Enter" or clicking the "Find" button now pans and zooms to show the
2944  highlighted stations.
2946* aven: Left-clicking away from a station now cancels measuring line.
2948* aven: Setting view to North, South, East, or West is now animated like
2949  the tilt from plan to elevation.
2951* aven: Fix presentation saving to also write "." for decimal points and
2952  presentation loading to accept either "." or ",".
2954* (Unix version): aven: Add text for all toolbar items so that aven
2955  will work with the Gnome desktop preference for displaying toolbars as
2956  icons with text or just text (wxWidgets needs fixing first though).
2958* (Unix version): aven: Remove the ability to detach the menu bar (yell
2959  if you actually used it and I'll restore it!)
2961* aven: Add "all survey files" option to the "open file" dialog.
2963* (MS Windows version): aven: Fix cursor keys to pan survey.
2965* (MS Windows version): Built with wxWidgets 2.6.3 instead of 2.6.2.
2967* (MS Windows version): Fix installer to work on Windows 2000 or XP if
2968  run by an unprivileged user.
2970* (MS Windows version): Upgrade to the latest version of InnoSetup (the
2971  installer builder we use) and include new installer translations for
2972  UK English, Spanish, Brazilian Portuguese, Italian, Romanian, and Slovak.
2974* (MS Windows version): aven: Include Catalan and Brazilian Portuguese
2975  translations of messages for wxWidgets (the GUI library we use).
2977* aven: Disable "Highlight exported points" if there aren't any.
2979* Updates to French translation from Michel Bovey.  Also updates to German,
2980  Italian, Catalan, Spanish, and Romanian translations.
2982* (Unix version): test suite: fix smoke test to pass even without X running
2983  (it was meant to but the code had a bug).
2985* aven: Check if OpenGL is available and exit cleanly with a helpful error
2986  if it isn't.
2988* (Unix version): aven: Fix --help and --version to work without a working
2989  X display (provided it's built with wxWidgets 2.5.1 or newer).
2991* aven: Automatically select the presentation tab of the notebook when the user
2992  selects "New Presentation" or "Open Presentation".
2994* aven: Fix "Delete" in the presentation list to not get passed on (and so not
2995  reset to default view as well).
2997* aven: Fix Ctrl+Insert in the presentation list not to segfault if the list is
2998  empty.
3000* aven: Fix Cursor Up and Down in the presentation list to move the highlight
3001  up and down instead of being passed on and moving the survey.
3003* aven: Improve SVG output compatibility.  Tested with Mozilla Firefox 1.5,
3004  Adobe's SVG browser plugin, Gimp 2.2.8, Gqview 2.0.0, Opera 8.5,
3005  Safari 2.0.3, and InkScape 0.42.
3007* aven: Put a 5mm border around exported SVG files to allow for station markers
3008  and non-zero width lines.
3010* aven: Fix crash when exporting as SVG or Sketch if labels or surface data
3011  was turned on.
3013* aven: Actually close the file we're exporting which fixes problems with it
3014  not always being fully written.
3016Changes in 1.1.7 (2005.10.18):
3018* cavern: Add validity checking for dates in *date commands (with feature
3019  test in testsuite).  A date entered as just "year" or "year.month" now
3020  becomes a date range for the relevant period (previously it became a single
3021  date near the middle of that period).
3023* extend: Fixed 2 uninitialised flags (should fix erratic behaviour on
3024  with MS Windows).
3026* extend: Default output name for a file called input.3d is now input_extend.3d
3027  rather than just extend.3d (which was annoying if you wanted to extend
3028  several surveys in the same directory).
3030* aven: OpenGL 2.0 always includes support for point sprites so rework
3031  our check for them to include that knowledge.
3033* aven: Regenerate depth bar if user switches to/from metric units.
3035* aven: Don't clear the "there" mark just because the mouse pointer has
3036  moved off a station.
3038* aven: When processing a .svx file, put the resultant .3d file in the
3039  same directory (since that's where we then try to load it from).
3041* aven: Fix labelling of date colouring on 32 bit platforms.
3043* aven: If "colour by date" is on and we load a survey with no date info
3044  (or all surveyed on the same date) then set "colour by none".
3046* aven: Make the error dialog modal and remove a signal handler once it
3047  has fired to prevent endless (or seemingly endless) cascades of error
3048  dialogs.
3050* aven: Enforce a minimum object volume diameter of 1m to avoid problems
3051  if a survey file with only one station in is loaded.
3053* aven: Fix problems with indicators disappearing when we're drawing
3054  blobs and/or crosses the slow (but always supported) way.  (Problem
3055  introduced in 1.1.6).
3057* (Unix version): aven: Really stop setting extra toolbar margin when using
3058  GTK2.0.  The attempt to fix this in 1.1.3 failed because __WXGTK12__ is
3059  set for GTK+ 1.2 or *any later release* so is true for GTK+ 2.0 too!
3061* (Unix version): aven: Add details of which of wxGTK, wxMotif, and wxX11
3062  we've been compiled with, and which GTK+/Motif version where appropriate.
3064* (Unix version): Fixed build on Fedora Core 3.
3066* documentation: Updates to 3d file format specification from Mike McCombe.
3068Changes in 1.1.6 (2005.10.10):
3070* (MS Windows version): Distribution is about a third smaller than 1.1.5
3071  (mostly because mingwm10.dll is no longer required).
3073* aven: If aven is asked to load a .svx, .dat, or .mak file, run cavern on
3074  it, showing cavern's output in a window (with errors and warnings clickable
3075  to load the offending file into an editor), and then loading the resulting
3076  3d file.
3078* aven: Added "Colour by Date" option.
3080* aven: Disable "Colour by Depth" option if there's no elevation variation.
3082* aven: Don't crash if trying to load a survey with no elevation variation.
3083  Instead turn off depth colouring.
3085* aven: Export as HPGL added.
3087* aven: Improved update of mouse coordinates and measuring line (thanks to
3088  Martin Green).
3090* aven: Show the coordinates of either the mouse pointer or the nearest
3091  survey station to it (if there is one near enough).  Showing both was
3092  confusing and meant the status bar overflowed on smaller displays.
3094* aven: When printing an extended elevation, don't show bearing and elevation.
3096* aven: Don't lock "flat" surveys which aren't extended elevations - a
3097  flat survey with LRUD data isn't flat any more!
3099* aven: When we have to draw blobs and crosses the slow way (because the
3100  graphics hardware doesn't support the fast way), draw them so that they
3101  should appear at the correct depth into the 3D scene instead of on top
3102  of everything else.
3104* aven: Make "play presentation backwards" icon green to match the other
3105  presentation icons.
3107* (MS Windows version): aven: Mouse clicks on the survey view now set the
3108  keyboard focus there.
3110* (MS Windows version): aven: Fix first redraw of a newly loaded survey.
3112* (MS Windows version): aven: Fix redrawing of measuring line.
3114* cavern: Store dates for img_XSECT.
3116* cavern: Fixed small one-off memory leak if you specify -o more than once.
3118* (Unix version): Check environmental variable LC_MESSAGES when deciding what
3119  language to use for messages.
3121* (MS Windows version): "Print" on a 3d file now prints through aven rather
3122  than the separate printer driver (Unix has done this for some time).
3124* Removed old printer drivers.
3126* img library: When creating a 3d file, ignore img_XSECT if we've been asked
3127  to write a file format version which doesn't support it.
3129Changes in 1.1.5 (2005.09.20):
3131* (MS Windows version): aven: Fixed crash on start-up (introduced in 1.1.4).
3133* aven: Make blobs round like they are in Survex 1.0.
3135* aven: If the graphics drivers don't support drawing blobs using OpenGL
3136  point markers, fall back to drawing filled circles.
3138* aven: If the graphics drivers support it, draw crosses as texture mapped
3139  OpenGL point markers which is much faster.
3141* aven: Cross size increased to match Survex 1.0.
3143* aven: We must update which blobs are displayed if display of surface or
3144  underground legs is toggled.
3146* cavern: Fix handling of a *solve followed by survey data, none of which is
3147  attached to the previous data.
3149* cavern: Fixed "No survey data" error when a *solve is followed by another
3150  *solve (or the implicit solve at the end of processing) with no data between
3151  them.
3153Changes in 1.1.4 (2005.09.19):
3155* aven: Added Aven's icon to the "About" dialog.
3157* aven: Use localised character for the decimal point (e.g. "," in most
3158  continental European countries).
3160* aven: Previously the survey tree would get focus and then take keypresses
3161  (e.g. "P", "L", "Delete").  Now we pass most keypresses across so they
3162  operate on the cave, and transfer the input focus across when we do.
3164* aven: Make pressing "Return" in the tree control expand/collapse a subtree.
3166* aven: Speed up intialisation by delaying creation of OpenGL lists until
3167  they're needed.
3169* aven: Added Mark Shinwell's bounding box with shadow of the survey.
3171* aven: Disable the "Tubes" button/menu item when there's no LRUD data.
3173* aven: Reworded "Restore Default Settings" as "Restore Default View".
3175* (Unix version): aven: Set sensible default margins for printing and preserve
3176  any margin values the user specifies between runs (previously margins
3177  defaulted to 0 each time aven was run).
3179* Documentation: Document *DATA PASSAGE in the manual.
3181Changes in 1.1.3 (2005.09.07):
3183* (Microsoft Windows version): Fixed build problems.
3185* cavern: Allow OMIT character (-) for left/right/up/down.
3187* aven: Remove an unnecessary menu separator.
3189* aven: Fix "Find" and "Hide" toolbar buttons to work with GTK2.0.
3191* aven: Make the tooltip for "Hide" show the number of found stations.
3193* aven: If * or ? is used in a glob-style pattern, force a non-substring match.
3195* aven: Enable "New Presentation" when there's a 3d file loaded, rather than
3196  when there's a presentation loaded.
3198* aven: Make entrances green in side panel tree list to match green blobs used
3199  in cave view.
3201* aven: Don't show surface labels if we're not showing surface data, etc.
3203* aven: Merge "Start Rotation" and "Stop Rotation" into "Toggle Rotation" and
3204  make "Space" the key for this.  Keep Return working "Stop Rotation" so
3205  existing users are happy, but don't advertise it.
3207* aven: Normalise filename by adding any extension used, and use the normalised
3208  filename for file history and window title.
3210* (Unix version): aven: Stop setting extra toolbar margin when using GTK2.0
3211  as the toolbar buttons already have a sensible margin - the extra margin is
3212  only needed with GTK1.2.
3214* aven: Fix handling of plumb legs in tube model.
3216* aven: Fixed swapped L and R in tube model.
3218* extend: Preserve UD cross-section information in extended elevation.
3220* extend: Add new messages for John Pybus' enhancements.
3222Changes in 1.1.2 (never formally released):
3224* Added support for LRUD data in .svx files, in .3d files, and aven can
3225  now load and display it on screen and on printouts.  The ability to "fake"
3226  LRUD data in aven is gone for now but will reappear in some form later.
3228* cavern: Removed support for writing Chasm's 3dx format.  We're going to
3229  fold any desirable missing chasm functionality into aven.
3231* aven: Rearranged mouse actions as discussed on the mailing list.  Added
3232  cursors for each different mouse action to help the user learn what each
3233  does.  Also added cursors for the "compass" and "clino" as well as the
3234  scalebar to suggest to the user that they can be dragged to change the view.
3236* (Unix version): aven: Don't segfault if LANG isn't a known language.
3238* tests/smoketest.tst: If X windows is running, check that we can run aven
3239  with --help and --version.
3241* tests/cavern.tst: Fixed cavern.tst to warn if it is skipping a test because
3242  no results are listed for it.  This revealed that there was a "newline" test
3243  which should have been called "badnewline", and was a broken testcase too!
3244  Fixed all these problems.
3246* cavern: Applied Simeon Warner's patch for handling backcompass, backclino,
3247  and omitted forward compass/clino readings in Compass DAT files.  Added
3248  a feature test for this to the testsuite.
3250* It no longer makes sense to have an option not to build aven or to build aven
3251  without OpenGL so remove old machinery for this from configure and the
3252  sources.
3254* (Unix version): configure: Check if "-lXxf86vm" is needed.
3256* configure: Better output for strcasecmp test.
3258* aven: Fix crosses to work much better.  Not a total fix - their position
3259  in the Z buffer isn't correct and they're rather slow to plot.
3261* aven: Don't regenerate the hittest grid every time the mouse moves while
3262  animating, which solves the mysterious pausing effect (thanks go to Martin
3263  Green for spotting this!)  Also clear all the status bar coordinates when
3264  animating.
3266* aven: Sort out clashing menu shortcuts in some languages.
3268* aven: Fixed compilation problem on x86_64
3270* SPUD: Pruned out stuff which has been done or which is not actually relevant
3271  to this branch.
3273* Merge various changes from 1.0 branch:
3275  + aven: Port over "printing from aven" functionality.
3277  + aven: Port over "export as" functionality,
3279  + Add David Loeffler's vim mode for .svx files.
3281* aven: Fix check for whether a label is behind us in perspective view.
3283* aven: Don't use an opengl list for drawing the indicators - we typically make
3284  a new list each time we plot them anyway.
3286* Remove lingering traces of support for RISC OS and pre-386 MSDOS
3288* aven: Set icon on non-Windows platforms too.  This means that with
3289  WindowMaker on Unix you get an icon on the AppIcon by default.
3291* configure: Update wxWindows checks to handle newer wx versions.
3293* Make all maintainer perl scripts "use bytes;" to avoid utf-8 double encoding
3294  problems.  They also all require Perl 5.8 now (hopefully this isn't an issue
3295  for anyone building from CVS).
3297* acinclude.m4: Quote macro name for fix autotools warning.
3299* Documentation: "tilt up" is "'" not ",".
3301* aven: Add support for mousewheels (to tilt the cave).
3303* aven: Fixed twisted transitions to and from pitches in certain cases.
3305* aven: Pick a sensible initial window size when the user's desktop is spread
3306  over more than one monitor (works best with wx2.5 or newer, but try to do
3307  better with wx2.4 or earlier as well).
3309* aven: Initialise GfxCore slightly later to avoid visual glitch from notebook
3310  contents being visible before any survey is loaded.
3312* aven: Allow a coloured texture to be used
3314* aven: Don't initialise until we have data (to the user, this means the window
3315  is default colour (grey for most systems) not black until a survey is
3316  loaded).
3318* aven: Fixed weird "shadowed" icons.
3320Changes in 1.1.1 (2004-10-06):
3322* (Microsoft Windows version): aven: Hopefully fix loading a survey file at
3323  startup.
3325* aven: Delay loading the bitmap for the "About" dialog until it is first
3326  needed.  We want start up to be as quick as possible.
3328Changes between 1.0.32 and 1.1.0 (never formally released):
3330* NOTE: Survex 1.1.X releases are development snapshots made available for
3331  the purposes of allowing wider testing and getting more user feedback.  Once
3332  the code has stabilised the version number will be raised to 1.2.0.
3334* aven: Now uses OpenGL for 3d rendering - you may need to install drivers if
3335  you're using Windows 95 - these can be obtained from:
3338* aven: Solid passages - passage dimensions are currently inferred from
3339  the leg length (pretty effective as you can measure longer legs in
3340  larger passages).  Use of real LRUD data coming soon...
3342* aven: Depth colouring is now continuously varying.
3344* aven: Colour by depth can now be turned off (and there's the start of a
3345  framework for properly implementing colour by date, error, etc).
3347* aven: Find stations moved onto the toolbar and now uses a simple wildcarded
3348  match (? matches any character, * matches any number of characters).
3350* aven: We now use the status bar for coordinates, distances, etc to make
3351  better use of screen space.
3353* aven: Full screen mode (F11).
3355* aven: Perspective view.
3357* aven: Context sensitive cursor shape - needs more work.
3359* aven: Mouse actions changed (hopefully they're now more natural, but
3360  you may find the change disorientating - feedback wanted on this).
3362* aven: Added "presentations" which allow you to set up fly-through paths
3363  and load/save/run them.
3365* aven: A presentation can be exported as a movie file.
3367* aven: Added Save screenshot facility.
3369* aven: Depth fogging option.
3371* aven: Added Smooth Lines option.
3373* aven: Added Textured Walls option.
3375* aven: If a survey has surface legs but no underground legs, default to
3376  showing the surface legs.
3378* cavern: Dates given to *date are now stored in the 3d file.
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