PhotoQuick v4.15.2 (Qt5)

Changelog :

4.15.2 : fixed : corrupted pdf generation (and sometimes crash) when saving monochrome image as pdf.
4.15.1 : appimage ported to qt5
4.15.0 : completely rewritten pdfwriter. very simple higher level pdfwriter api.
photo collage redesigned completely. background color and image can be changed easily,
page orientation can be changed.
4.14.1 : threshold, adjust brightness now works on transperant images

Note : Previously Qt4 was used in AppImages. But suddenly I found that each time appimage is launched, AppImage is mounted on different mount point, and everytime new imageformat plugin location is cached in ~/.config/Trolltech.conf .
So each time launching the program causes Trolltech.conf grow more and more in size, and becomes huge.
Qt5 does not cache plugin location in file and has not this issue. That's why AppImage will be packed using Qt5 since this release (though AppImage size is 3 times bigger than before).