How to: Behaviours and Interfaces
*Definitions how something should behave, like Interfaces from OOP-World*

* [connection](https://github.com/fishcakez/connection) - Connection behaviour for connection processes. The API is superset of the GenServer API.
* [gen_state_machine](https://github.com/antipax/gen_state_machine) - Elixir wrapper for gen_statem.
* [stockastic](https://github.com/shanewilton/stockastic) - Simple Elixir wrapper for the Stockfighter API.