autoTween Animate began as a python script running in Blender to improve stroke interpolation.  It is intended as a tool for hobbyists and professionals to produce sequences that maybe lie between storyboarding and production work.  It is perhaps best at helping one quickly sketch ideas which can be refined elsewhere if wanted.  It can take time becoming comfortable with creating sequences via "mapping strokes", but hopefully gives more time to focus on drawing key moments of character/object movement.