v0.3.0

v0.3.0

[neutral changes]

• Fix various compiler warnings
• Add tests using bypass (openstex_test repository will be deprecated)
• Remove dependency on the excellent lau/calendar as elixir core now contains required functions.
• Upgrade dependencies

[breaking changes]

• Remove the defprotocol abstraction and simplify. While protocols were a nice idea, it is
  overengineered for the time being.
• Separate the adapters out of the repository into their own repos, namely:
  • openstex_adapters_rackspace
  • openstex_adapters_ovh