Survex 1.4.16 released

[Olly Betts]

Survex 1.4.16 is now available:

https://survex.com/download.html

Here's the full NEWS file entry for this release:

Changes in 1.4.16 (2025-02-21):

* aven: Improve "Colour by Survey".  Surveys whose names only differ in the
  final character tended to get visually similar colours (often
  indistinguishable), but now should get very different colours.  Reported by
  Eric C. Landgraf and Patrick Warren.

* aven: Add "Find" item to right-click menu on survey tree which triggers a
  search for the survey or station that was right-clicked on which highlights
  with a yellow blob on each station, like double-clicking used to before
  1.2.36.  Requested by Patrick Warren.

* cavern: Fix calculation of convergence which could incorrectly give zero
  with some PROJ versions < 9.3.0.  Unclear exactly which versions are
  affected, but seen with PROJ 8.2 and can't affect PROJ >= 9.3.0.  Reported by
  Eric C. Landgraf.

* cavern: Report approximate true grid convergence range which provides a way
  to assess if the representative location(s) specified by `*declination auto`
  are suitable.  Fixes #141, reported by Eric C. Landgraf

* cavern: Support Compass 'C' shot flag.  In Compass this causes flagged legs
  to not be subject to loop closure.  Survex now sets the SDs of such legs to
  1mm, so flagged legs can still move slightly during loop closure.  Previously
  Survex ignore this flag entirely.

* Document Microsoft Windows version requirements.

* Enable SSE2 by default on 32-bit x86.  Intel CPUs without SSE2 were
  discontinued ~18 years ago so it seems very unlikely anyone is actually still
  using one for Survex.  We keep hitting testcase failures due to excess
  precision from 387 FP instructions, and the time spent adjusting testcases to
  avoid these would be better spent on new features, etc.

* Tighten up charset name parsing a little.

* Merge updates to Russian translation from Vasily Vl. Suhachev.

* Various minor improvements to documentation.

* Various minor improvements to test coverage.

Here are SHA256 checksums should you want to verify the integrity of the
files:

92245795dd05c17536ccf80c3d247f29049da1914b4ef77d63f9fdeff60995c0  survex-1.4.16.tar.gz
8c7d84a5c8b314d50b957f5fac740c2531a55f189aea199cb602de7986b72379  survex-microsoft-windows-1.4.16.exe

There are also detached GPG signatures in the download directory:
https://survex.com/software/1.4.16/

There are "release notes" on the wiki, which I'll try to keep updated
with any issues found, so take a look there for the latest information:

https://trac.survex.com/wiki/ReleaseNotes/1.4.16

Please report any issues you find which are not covered in the release
notes to the bug tracker: https://trac.survex.com/

Cheers,
    Olly
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