initial commit: non working alpha
working on position, pivot and rotation
position correct, pivot with rotation transformation almost correct?
correct position and pivot with angle transformations
png exporter: WIP
improved png exporting and basic logging
core methods updated
layering: depth inverted, correct layer ids
some debugging and tests, minor cleanup
better debug logging for tests
scaling, not flipping (negative scale) implemented
flipping WIP
flipping & some cleanup
save scml with win line endings
add time to keys
save all frames, not just keyframes
remove packaged extension
added timeline layer names
renamed extension to shporter
save images in folder named by project name