[Geographiclib-announce] GeographicLib 1.49 (released 2017-10-05)

[Charles K. <cha...@sr...>]

Changes between 1.49 (released 2017-10-05) and 1.48 versions:

   * Add the Enhanced Magnetic Model 2017, emm2017. This is valid for
     2000 thru the end of 2021.

   * Avoid potential problems with the order of initializations in DMS,
     GARS, Geohash, Georef, MGRS, OSGB, SphericalEngine; this only would
     have been an issue if GeographicLib objects were instantiated
     globally. Now no GeographicLib initialization code should be run
     prior to the entry of main().

   * To support the previous fix, add an overload, Utility::lookup(const
     char* s, char c).

   * NearestNeighbor::Search throws an error if pts is the wrong size
     (instead of merely returning no results).

   * Use complex arithmetic for Clenshaw sums in TransverseMercator and
     tranmerc_{fwd,inv}.m.

   * Changes in cmake support:
     + fix compiler flags for GEOGRAPHICLIB_PRECISION = 4;
     + add CONVERT_WARNINGS_TO_ERRORS option (default OFF), if ON then
       compiler warnings are treated as errors.

   * Fix warnings about implicit conversions of doubles to bools in C++,
     C, and JavaScript packages.

   * Binary installers for Windows now use Visual Studio 14 2015.