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NEWS

@@ -1,3 +1,67 @@
+up to: 148902bb839bd74e535b5f724deee6a87ecd9cb6
+
+Changes in 1.4.6 (2024-02-??):
+
+* doc/TODO.htm: Update.
+
+* img library:
+
+  + Improve Compass PLT support:
+    [img] Read LRUD data for Compass PLT
+
+    [img] Infer img_SFLAG_ENTRANCE for Compass PLT
+    Compass PLT files don't include station flags, but they do have a
+    "Distance From Entrance" field for each station and it seems reasonable
+    to infer the entrance flag for stations where this is present and zero.
+
+    [img] Read survey dates from Compass PLT files
+    The test coverage for this also serves as a regression test for the
+    recent fix for rounding timestamps before 1970.
+
+  + Improve time_t conversion to days-since-1900
+    C signed integer division rounds towards zero, so previously
+    timestamps before 1970 would get rounded to the end of the day instead
+    of the start, so aside from midnight would end up one day later.
+    Now we offset before division so rounding is consistently to the start
+    of the day.
+    This only affects cases where we need to convert from time_t to
+    days-since-1900, and only for timestamps before 1970.
+
+* aven,survexport: Enable export of surface legs for KML and JSON.
+  Currently surface and underground legs aren't differentiated in
+  these export formats if both are enabled.
+
+    Replace used of obsolete AC_LANG_C macro
+    Remove unused and obsolete AC_TYPE_SIGNAL macro
+    We haven't used the RETSIGTYPE macro this defines since
+    9d1503de894514c0e1285a314b7c5126b0f046be.
+
+* cavern: Fix two grid convergence bugs.
+    One is due to a bug in PROJ < 9.3.0 with projected coordinate systems
+    with northing/easting axis order (such as EPSG:3042) which results in
+    the grid convergence being wrong by 90°.  We now work around this
+    problem if building with an affected PROJ version.  Reported by
+    Patrick Warren on the mailing list.
+    The other is that we weren't checking the output coordinate system
+    was set before calculating the convergence, which resulted in a
+    grid convergence of 0° being used if *declination auto was used
+    before *cs out.  We now handle this case correctly, and the
+    convergence is now calculated lazily which happens when we read a
+    compass reading, and gives an error if the output coordinate system
+    hasn't been set by then.
+
+* manual: Improve NATO mils example.
+
+* INSTALL: Clean up text re -dev packages
+
+* INSTALL: Add a link to the instructions for building from git.  Reported by
+  Andrew Northall in https://github.com/ojwb/survex/pull/13
+
+* aven: Fix OpenGL scaling on high DPI displays with wxWidgets 3.0.
+  Reported by Philip Balister.
+
+* Fix compilation warnings from newer compiler versions.
+
 Changes in 1.4.5 (2023-06-29):
 
 * aven: Fix rendering of crosses when drawn as sprites.  Reported by echarlie.