Survex 1.4.13 released

[Olly Betts]

Survex 1.4.13 is now available:

https://survex.com/download.html

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

Changes in 1.4.13 (2024-12-01):

* aven:

  + Don't show crosses on anonymous stations since they just clutter up the
    display (especially for anonymous splays).  Suggested by Andrew Atkinson.

  + Fix 1.4.10 regression in plotting of station names.  Each anonymous station
    was blocking out a small rectangle which no actual station name could
    overlap.  Reported by Špela Borko.

  + Reduced start-up time by only initialising GDAL if we have overlays to
    show.

  + (Microsoft Windows version): Avoid recurring "GDAL support not enabled in
    this build" message box.  This message is now only shown once if you try to
    add an overlay.  Reported by Špela Borko.

* cavern:

  + Update to use v14 of the IGRF model for calculating declinations.
    This was issued in November 2024 and should give slightly more accurate
    declinations for surveys made since 2015.  Fixes #137.

  + The component count was wrong in some cases, and we calculate the number
    of loops using this component count, so the loop count would also be wrong
    by the same amount in these cases.

  + The component count and loop count are now reported when there are
    unconnected survey stations.

  + *date now support ISO format dates.  Fixes #96, reported by Milosch.

  + *date now support date types "surveyed" and "explored" (existing usage
    without an explicit type is interpreted as "surveyed").

  + If the output directory isn't writable or doesn't exist we would complain
    that we can't create the .err file - now we try to create the .3d file
    first so complain about that instead which seems more helpful.  Reported by
    Eric C. Landgraf.

  + When inventing a fixed point we now avoid picking a fixed point which is
    only attached to nosurvey legs if there's another option.  The code was
    already meant to do this but it was buggy and we lacked a testcase for this
    situation.

  + Survey network reduction now finds some delta-star opportunities which were
    being overlooked.  This allows more complicated networks to be reduced
    further so fewer and/or smaller matrices need solving, which is faster.

  + Survey network reduction now handles a "lollipop" with a fixed stick end
    specially which is a little bit faster.  A more visible consequence is
    fewer "Solving one equation..." messages when solving a complex survey
    network.

  + Survey network reduction now makes use of articulating legs to split up the
    problem a little more, so we will often now solve more but smaller matrices
    which should be faster.

  + Assigning matrix row numbers now identifies equated stations in a slightly
    more efficient way.

* dump3d: Provide a way to get ISO format dates output.

* Documentation:

  + Improve documentation of *date in the manual.  When a partial date is
    specified (just a year, or a year and month only) the documentation claimed
    the centre of that year or month is used but actually this case is treated
    as a date range covering the whole year or month (respectively).  The end
    result is effectively the same as what was previously documented though
    since the centre of a date range is used as the date for calculating
    automatic declinations and is the date used by aven.

* Test suite:

  + Adjust hpglexport testcase to avoid i386 excess precision causing one of
    the HPGL coordinates to differ by one from its value calculated without
    excess precision.

* Assorted translation updates.


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

e1e8da3afd2bc0946b57c7fad7a0f6e088c8bf90d75497d8ddf493b9e8891b73  survex-1.4.13.tar.gz
bc92489e8fd0d65840b89955de15979b900e28d825958bab1ad63ae9523d0b93  survex-microsoft-windows-1.4.13.exe

There are also detached GPG signatures in the download directory:
https://survex.com/software/1.4.13/

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/1.4.13

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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