internal: Add a `fastpickle` module to help with multiprocess serialization. Looks like we're wasting a lot of time serializing custom class information for the workers, so this new module helps to convert classes to standard structures (dicts, lists, etc).

language: python
python:
  - "3.4"
install:
  - "pip install -r requirements.txt"
  - "pip install -r dev-requirements.txt"
script: py.test