cbmtools-0.9 (2022-12-05) tlr
    - cgen now returns exit code 2 on errors and exit code 1 on mismatch.
      (this is consistent with how cdif and diff behaves)
    - updated sys lines for cld sfx and cgen
    - enabled -Wextra and several other warning flags and fixed a few
      anomalies that showed up
    - switched to a reimplemented getopt to allow GNU style option
      ordering on all platforms.
    - updated make system to use automatic dependencies
    - updated documentation with more examples of cld usage
    - [BUGFIX] cld now remembers the load adress of zero length files and
      handles zero length slices instead of producing an output with load
      address $ffff