Facade for serialization of supported ASTs?

Escalating Twitter discussion discussion beyond 140 characters:

I created jawn-streamz for parsing scalaz-streams of ByteVectors to any Jawn-supported JSON AST. I think it could make a good Jawn module, but I also have the use case of serializing JSON back to ByteVectors. It would be splendid if this could also be done through a facade, and keep streamz support shielded from the Great JSON Framework Holy War.

Open questions:

1. Would serialization be in scope for Jawn, or is that bloat?
2. If in scope, what types are targeted for serialization? Parser supports String, File, Channel, ByteBuffer, and scalaz.stream.Process. Symmetry is neat.
3. What additions to the facade would be necessary to support those targets?
4. Should a serialization facade offer options for pretty-printing, compact, etc.?

Start by reviewing the existing parser facade and the jawn-streamz module, then compare the proposed serialization targets with the current parser targets. Resolve whether serialization belongs in Jawn, which output types and formatting options it should support, and what facade additions would be required; done means the scope and API direction are agreed.