Only verify version when uploading to PyPI (fixes #62).
Deleted trailing whitespace
Implemented Hash for platform independent hashes (time_dependent=True)
Deleted trailing whitespace
Cleaned up docstrings and comments
Switched order to numerator, denominator for readability
Fixed error when pickling Hash object due to internal struct
Updated version check in setup.py
Updated docstring
Isolated references to git to occur only as examples or in code actually specific to git
Removed tests of verify method (repository state is not controlled)
Updated module docstring and added string_version check to verify method
Updated call to verify method of __version__ in setup.py
Cleaned up docstrings
Fixed most of the .rst formatting
Added PyPI release version icon from shields.io
Update README.rst
Random.jumpahead deprecated in Python 3

The jumpahead method for random.Random no longer exists in Python 3 as
it was unsafe with the Mersenne Twister RNG. Simply creating a new
instance of random.Random (without a seed) suffices for creating
independent state (jumpahead was unnecessary). No results should be
affected: without setting a random seed or time_dependent=True there is
no meaningful notion of reproducible streams to worry about.
Removed outdated comment from testparameterizedobject.py
Moved testnumbergen unit tests from topographica to tests directory