Omdb

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- Add support for ``Season``/``Episode`` OMDb parameter via ``season``/``episode`` arguments to every main API function. Thanks cihansahin_!

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- Add ``Season``, ``Episode``, and ``SeriesID`` OMDb API fields as ``season``, ``episode``, and ``series_id`` model fields.

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- Add metadata to main module:

- ``__title__``
- ``__summary__``
- ``__url__``
- ``__version__``
- ``__author__``
- ``__email__``
- ``__license__``

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- Add ``search_movie``.
- Add ``search_episode``.
- Add ``search_series``.
- Add support for ``type`` OMDb parameter via ``media_type`` argument to every main API function.

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- Update ``models.Item`` with additional ``OMDb API`` fields: ``Awards``, ``Country``, ``Language``, and ``Metascore``.
- Add ``omdb.request`` method for easier access to raw request response.
- Initialization of ``omdb.Client`` now accepts keyword arguments for API request parameter defaults. Previously, a ``dict`` object needed to be passed in.
- Full PEP8 compliance.
- Integrate ``tox`` testing into ``setup.py``.

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- Python3 support. Thanks agronholm_!
- PEP8 compliance excluding max-line-length. Thanks agronholm_!
- Wheel support. Thanks agronholm_!