Fix some bugs with opening files.
Add offsetX/Y indicator in frame list.
Add scrollbars to AnimationFrameView.
Remove some old scrolling stuff.
Add zooming to AnimationView.
Minor clean.
Add nice pen tool.
Redraw bg in AnimationFrameView.
Fix quirks with background in AnimationFrameView.
Add color selector.
Add drawing tool selection menu.
Add eraser tool.
Add pickup color tool.
Add brush size selection.