Emencia.django.countries

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* Fixed bad path for ``HISTORY.rst`` in ``setup.py``;

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* Ensure compatibility with ``Django>=1.7``:

* Added compatibility support in model manager with ``get_queryset`` method;
* Added Django migration;
* Now loading initial data fixtures from a data migration since ``Django>=1.7`` don't do it automatically anymore;

* Update setup.py for better package classifier and packages infos;

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* Fix package MANIFEST for missing rule for fixture data file;

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* First release as a package;