BREAKING CHANGE: `Method`, `Request`, `Response`, `StatusCode`,
`Version`, and `Uri` have been replaced with types from the `http`
crate. The `hyper::header` module is gone for now.
Removed `Client::get`, since it needed to construct a `Request<B>`
with an empty body. Just use `Client::request` instead.
Removed `compat` cargo feature, and `compat` related API.
- Adds `Http::serve_addr_handle` which will bind to an address with a
provided `Handle`, and return a `Serve`.
- Adds `server::Serve` which is a `Stream` of incoming `Connection`s
being bound by a `NewService`.
- Renames `Http::no_proto` to `Http::serve_connection`.
