Release 1.9.1 1. Fix shadow color [QtCurve-Bug](https://github.com/QtCurve/qtcurve/issues/54) 2. Revert toolbar background [QtCurve-Bug](https://github.com/QtCurve/qtcurve/issues/52) 3. Workaround background image drawing. [QtCurve-Bug](https://github.com/QtCurve/qtcurve/issues/49) 4. Fix text emboldening in gtk2. [QtCurve-Bug](https://github.com/QtCurve/qtcurve/issues/58) 5. Become a KDE project 6. KF5 configure interface. Thanks to Eike Hein 7. Fix OSX build. Thanks to René J.V. Bertin. 8. Fix Gtk2 SegFault on mouse-hover [QtCurve-Bug](https://bugs.kde.org/show_bug.cgi?id=343704) 9. Fix Qt right-to-left layout [QtCurve-Bug](https://bugs.kde.org/show_bug.cgi?id=336668) 10. Fix screen scaling support 11. Better maxOS support