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).

cov-core==1.15.0
coverage==3.7.1
mock==1.0.1
pytest==2.7.0
pytest-cov==1.8.1
pytest-mock==0.4.3