An async rust interface to libutp.
A simple ucat implementation is provided in examples/ucat.rs
``` // Bind to 5000 cargo run --example ucat 127.0.0.1:5000
Listening for connection on 127.0.0.1:5000 Hi! ```
``` // Bind to 5001 and connect to 5000 cargo run --example ucat 127.0.0.1:5001 127.0.0.1:5000
Connecting to 127.0.0.1:5000 Hi! ```