Looks nice. (On my secondary phone which runs a somewhat older Firefox it gets an "unexpected" error whenever trying to build the Butterfly, works fine all the

Looks nice. (On my secondary phone which runs a somewhat older Firefox it gets an "unexpected" error whenever trying to build the Butterfly, works fine all the way through the Turtle.) Have you considered open sourcing that? I tend to avoid closed source software as much as I can. Of course Javascript is not really closed source, but I have better things to do than looking at packed source.