Announcing LittleProxy 0.1 based on Netty

[Stephen Haberman]

> Do you guys think it's better to make some properties writable?  URI,
> method, status are the only immutable properties at the moment.

I think since HttpMessage is already mutable, it makes sense to just go
all the way and allow changing of the protocol version/etc.

As far as HttpChunk being immutable, I don't think it's a design
inconsistency, just a different use case--you frequently want to tweak
aspects of an HttpMessage (headers, etc.) but how often do you need to
change a chunk by adding/removing bytes to it?

(Looking forward to the patch, Adam.)

- Stephen