Changelog for marble-widget-15.08.3-52.fc23.i686.rpm :

* Mon Jan 11 2016 Rex Dieter 1:15.08.3-52- Requires: kde-filesystem
* Sun Jan 10 2016 Rex Dieter 1:15.08.3-51- %license LICENSE.txt- remove reference to unused marble-data subpkg- -devel: Conflicts: marble-widget-qt5-devel- update URL, simplify Source0 URL
* Wed Dec 23 2015 Rex Dieter 1:15.08.3-50- first try as standalone marble-widget