Python CodeWars Test module

Test module is PEP8 compliant now; it's probably a good idea to use the `pep8` linter in the future to catch errors.

- No longer using a Java-esque class with static methods
- Including python test framework code with `test = Test = reload(__import__('cw-2'))` pattern for `safe` importing  (even still, it might be a good idea to wrap the test framework in a function to limit variable scope)