Maybe we can use degrees by default, and let people do something like
node.rotateY(Math.PI/8, true) // true means radians
I'll do that in my prototype, which is coming along by the way! I have some things rendering, but no demos online yet. It's not using workers though, as I put that aside to just get the basic top-level API concepts down. Then I'll work back around again but with workers. Also, just DOM, no WebGL yet.