Ben Lerner

I don't think that will quite work, because `BigInteger` and `Rational` are generative types -- they're defined within the `MakeNumberLibrary()` closure, so if a "legacy caller" of the non-closed-over library...

Fair points. - I didn't consider the `anchor` branch because there are already so many diverging changes that we'd have to revisit this anyway. - `pyret-npm` is a customer of...