Potrace Files

September 17, 2019: Release 1.16

 This release consists of bugfixes and minor portability improvements.
 A potential arithmetic overflow was fixed. Rotation angles are now
 normalized to between -180 and 180. We now use binary file I/O on the
 OS/2 platform. The test suite tolerances were adjusted. The
 configuration option --enable-local-getopt was renamed as
 --with-included-getopt. Some build system improvements. Thanks to
 Henri Salo and Dave Yeo for reporting bugs and suggesting
 improvements.