Git-punchcard

- automatic deployments
- changes in setup and testing

- learn ``--period Y/X`` parameter to specify Y/X axes
- can plot histograms by leaving one of the axes empty
- understand ``-v`` as alias for ``--version``

- fix setup.py exception if called without runtime dependencies
- import pytz only if needed
- learn a ``-C DIR`` parameter to pass the path to the git repository
- learn a ``--version`` parameter to show the script version
- fix error when passing options and git options at the same time
- turn into a module and use setuptools entry_points to generate script

- add ``--title`` parameter

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