Contains important bug fix.
[b]Changes[/b]
Fix: Pixel perfect drawing removed pixels when crossing lines.
Fix: Mouse wheel action for zooming now only applied when mouse pointer is on canvas.
Fix: Middle mouse button executing canvas mover sometime drew on canvas instead of moving it
Fix: frames sometimes not loaded correctly. Some (mostly larger) frames might not load correctly due to a compression decoding fault.
Added auto scrolling mechanism to toolbox for when the height does not fit on screen
Brush transformation tools now allow adding frames without stopping transformation