Django-setuptest

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. Support Django 1.9.

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. Django 1.8 support (lamby).
. Exclude south_migrations from PEP8 checks (mikebryant).

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. Added saving of raw coverage data

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. Introduced support for Django 1.7.

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. South patches the test management command to handle the SOUTH_TESTS_MIGRATE setting. Apply that patch if South is installed.

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. Python 3 compatibility.