Pyunicorn

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- Substantial update of ``CouplingAnalysis``.
- New methods in ``RecurrenceNetwork``: ``transitivity_dim_single_scale``,
``local_clustering_dim_single_scale``.
- Renamed time-directed measures in ``VisibilityGraph``: ``left/right`` ->
``retarded/advanced``.
- Improved documentation and extended publication list.
- Began transition from ``Weave`` to ``Cython``.
- Added unit tests and improved Pylint compliance.
- Set up continuous testing with Travis-CI.
- Fixed some minor bugs.

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- Removed a whole lot of ``get_`` s from the API. For example,
``Network.get_degree()`` is now ``Network.degree()``.
- Fixed some minor bugs.

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- Restructured package (subpackages: ``core``, ``climate``, ``timeseries``,
``funcnet``, ``utils``).
- Removed dependencies: ``Pysparse``, ``PyNio``, ``progressbar``.
- Added a module for resistive networks.
- Switched to ``tox`` for test suite management.
- Ensured PEP8 and PyFlakes compliance.

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- Fixed some minor bugs.
- Switched to ``Sphinx`` documentation system.

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- First public release of ``pyunicorn``.