[Gtk] merge adjustBrightness and adjustContrast into one function
Enable openmp
Add invert colors functionality
[Gtk] Fix line ordering issue
Move AsyncQueue to Utils
[Gtk] Unbreak crash handler
Gtk <-> Qt codebase syncronization, rework Gtk Displayer code
[Qt] Don't put AboutDialog to separate file
[Qt] Fix possibly inconsistent toggle output pane button state
[Qt] Set instance pointer before registering signal handler
[Qt] Invalidate notification handle when closing notification via button
[Qt] Fix version check
Gtk <-> Qt codebase syncronization
[Qt] Remove debug print
[Qt] Use QtSpell::TextEditChecker::undo/redo instead of QTextEdit::undo/redo
[Qt] Initially hide output pane
[Qt] Remove unused include
Synchronize Qt and Gtk Acquirer codebase
Update TODO