Log Message:
Update:

4.13.4
======
- Fix segfault in xfconf_cache_set_property_reply_handler when
  multiple calls are made (bug #13825)
- Allow to store empty arrays (bug #13791)
- Fix a path in xfconf_cache_set where the mutex isn't locked (bug #13790)

4.13.3
======
- Flush gdbus connection on xfconf_shutdown
- Correctly use xfconf_shutdown in xfconf-query
- Check for invalid GPtrArrays in the conversion
  from GValue to GVariant.
- Fix some build issues in AM subdir-objects
- Fix some autogen.sh warnings
- Better documentation processing.

4.13.2
======
- Fix cache corruption due to a wrong g_value_unset call.
- Update API gtk documentation

4.13.1
======
- Revert the bump of libxfconf version from 0 to 1,
  to avoid massive changes in all xfce's components.

4.13.0
======
- Port xfconf to gdbus
- Bump libxfconf version from 0 to 1.