".fla / XFL import — This is the one I’m most proud of. You can open your old Flash files. As far as I know, this is the only open-source tool that functions as a full authoring environment and can actually import .fla files. Not just play them back — edit them."

as to when they share the source, idk!

Great.

I'd feel better if he had some other core contributors, but this is a great start.