Don't call sane_exit to prevent crash on exit
[Qt] Set main window icon
[Qt] Correctly set dialog parents
Add -mwindows to LDFLAGS when building for windows
Fix preferences window title
[Qt] Add missing header
Manual updates
[Qt] Qt5 compatibility for ScannerTwain
Windows packaging fixes
Update manual
Packaging updates
[Qt] Also load qt translations
Fix build type detection
Copy translations from mingw folder