I hate to admit this but there are definitely still a few sharp edges. (What happens when you re-define types across compilation units? What happens when you wa

I hate to admit this but there are definitely still a few sharp edges. (What happens when you re-define types across compilation units? What happens when you want to back out of a type definition?) With that said, our criterion for shipping was "did it become useful for our purposes?" and the answer is "yes." So, there's still work to be done, and we'd love any feedback at all that would improve your experience.