- Update to version 4.18.1
* Add missing chain-up to parent in constructed()
* Add runtime guard for XfceSMClient
* build: Restrict XfceSMClient to X11
* build: Use XDT_CHECK_OPTIONAL_FEATURE
* Small UI Improvements
* parole-conf: Fix critical warning and memory leak
* build: Define our own windowing macro instead of extending GDK's
* plugins: Disable systray icon outside X11
* Guard X11 code paths
* Fix invisible mouse (Issue #125)
* Add middle click actions to tray icon (Fixes #88)
* docs: Remove useless check
* mpris2: Properly disconnect signal handlers
* powermanager: Add missing sanity check
* Only use header bar if gtk-dialogs-use-header (Fixes #117)
* build: Add -export-dynamic to LDFLAGS
* Add icons at missing sizes, clean up SVG metadata
* Translation Updates (forwarded request 1130084 from manfred-h)