New colors
Keystroke missed for thaumatrope
Square cels
round
Square cels
Merge branch 'round'
Fix drawing, and remove unused code
Button radius
Improve sequence frame transition
Reorder last changes
Flipbook, part 1
Remove unneeded aux function
Flipbook part 2, opacity
Flipbook part 3, rotation
Flipbook tween name refactor
finish flipbook, slower frame change