Copyright (c) 2013-2015, Kim Davies. All rights reserved.

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#. Redistributions of source code must retain the above copyright

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Portions of the codec implementation and unit tests are derived from the

Python standard library, which carries the `Python Software Foundation

License <https://docs.python.org/2/license.html>`_:

   Copyright (c) 2001-2014 Python Software Foundation; All Rights Reserved

Portions of the unit tests are derived from the Unicode standard, which 

is subject to the Unicode, Inc. License Agreement:

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