Sound, Waveform interfaces
Fix Watcher target copying
scratch20: Sounds
scratch14: load sounds
scratch14: save sounds
Stage.backgrounds setter
scratch20: Images with text
Update todo
Correct default Sprite direction
Examples scripts allow either .sb or .sb2
Add a bunch of tests from earlier
Change plugin.make_blocks() method -> plugin.blocks list
Remove underscores from insert options: _mouse_ -> mouse-pointer, _edge_ -> edge, _myself_ -> myself
Sort scripts by y position
Update todo; delete @done
Fix Scriptable._normalize when there's no costume
Various block fixes
Tiny bit of cleanup
Nicer unsupported wave file errors
scratch14: fix saving rotation centers