v0.9.1

- Fix double free during parsing broken XML metadata (Issue #33)
- Tests: Add acceptance test for --general-compress-type option
- Fix 'CR_CW_UNKNOWN_COMPRESSION cannot be used' error
- Refactoring: Fix compiler warnings
- Add --general-compress-type option (RhBug 1253850)
- Enable drpm support when drpm library is detected on system (RhBug: 1261031) (Issue #37)
- fix traceback on non-complete datetime information (Jarek Polok)
- parsehdr: Skip broken dependency with bad (non-numerical) epoch and print warning about that
  (https://lists.fedoraproject.org/pipermail/devel/2015-August/213882.html)
- misc: cr_str_to_evr(): Return NULL instead of "0" for bad (non-numerical) epoch
- updateinfo: Fix a typo in the package release attribute (Luke Macken)
- CMake: Don't require CXX compiler
- Tests for different checksum type for RPMs and repodata files (#31)
- Support different checksum type for RPMs and repodata files (#31)