v0.1.0

This is an initial release of this new Protobuf compiler.

It is thoroughly tested and should be considered production-ready. The only reason this is a v0 and not a v1 is to get a little more mileage on the new API. Since this is an entirely different interface to the compiler compared to this repo's predecessor, we want to keep a little flexibility for now to change and improve the shape of things. Once we've established more comfort with the ergonomics of the API, we'll lock it in with a v1.0.0.