A short update to let you know I'm still alive. I've been diving pretty deeply reworking things, but I'm almost finished converting all of the built-in javascript components over to the new C# API. There are still some supporting services that need to be implemented, then I'll be ready for testing. I'm not sure what the performance benefits will be, but I'm optimistic. Any release is still a few weeks out at the minimum.

So far it looks like old saves will be completely compatible.