## Changes Introduced in V7.3.2

The following describes the most significant changes which occurred in the AST library between versions V7.3.1 and V7.3.2:

1. Fix support for reading FITS header that use a GLS projection. Previously, an incorrect transformation was used for such projections if any CRVAL or CROTA value was non-zero.

2. The KeyMapKeyMap class has new sorting options “KeyAgeUp” and “KeyAgeDown” that retain the position of an existing entry if its value is changed. See the SortBySortBy attribute.

3. A bug has been fixed in the FitsChanFitsChan class that caused CDELT keywords for sky axes to be treated as radians rather than degrees when reading a FITS header, if the corresponding CTYPE values included no projection code.