Fix undo with deselecting all.
Fix undo for "select all"
Fix tablet listeners multiple connection (crude fix)
One more upgrade to offline image reloading system (hopefully not last)
Effect refactoring introduction: Make clear effect live.
Turn on antialising on freehand selection.
Finalize tiresome effects refactorine, remove unneeded grayscale transformation.
What is left is to think that to do with flip horizontal/vertical.