- Fix usage of %%lang_package

- Update to version 4.18.3
* cache: Fix overwritten error
* cache: Fix uncached value
- Fixes boo#1216682

- Update to version 4.18.2
* Cache property-not-found responses in XfconfCache
* Don't reset scheduled save timer on every write
* xfconf-query: Sort channel list (-l or -m alone)
* docs: Fix transfer type of xfconf_list_channels()
* docs: Add clarification about bindings
- Use lang_package as bnc#513786 has been closed as fixed almost
8 years ago.

- Update to version 4.18.1
* Update copyright year
* xfconfd: Lower warning level
* docs: Fix xfconf_channel_get() transfer annotation
* Update bug report address
* docs: Fix unused declarations warning
* docs: Properly enable GI docs
* xfconfd: Fix check for "/" when building property name
* xfconfd: Make xml backend case sensitive for channel names
* Translation Updates
- Remove _service file