- update to 3.4.3:
* Update translations
- update to 3.4.2:
* Remove dependency on unmaintained gtk-clutter, disable slideshow
* Add missing xlib dependency
- update to 3.4.1:
* Update translations
* fix missing type cast and invalid return type gcc errors
- update to 3.4.0:
* Update translations
* Switch to libwebkit2gtk-4.1
- update to 3.3.0-unstable:
* apply jxl patch from gthumb, adds support for jxl-0.9.0
- update spec file to newer standards, remove older Leap releases
and be more specific which BuildFlags are enabled
- remove patches 205.patch and pix-3.0.2-no-return.patch
- remove support for older openSUSE Leap releases (< 1500)