gaffer_udp 0.1.4

A protocol on top of udp providing some reliability. Not ready for public consumption.
Documentation 
# Gaffer UDP

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Based on [Gaffer on Games](http://gafferongames.com/networking-for-game-programmers/reliability-and-flow-control/) design

A rewrite of [game_udp](https://github.com/acmcarther/rust_game_udp), now that I'd like to think I can write Rust.

Uses my [Rust Cucumber](https://github.com/acmcarther/cucumber) implementation for integration tests.

## TODO

Congestion avoidance. This is put off because space cubes does not need it yet