* Update Python version classifiers in setup.py * Add Greek translation
0.21.1
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* Document supported versions of Django; fix Travis to test these versions.
0.21.0
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* Fix form tests on Django 1.10 * Address list_display and fieldsets in admin docs * external_apps.txt improvements * Remove support for Django 1.4-1.6, again.
0.20.2
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* Add extra_filters argument to the manager's most_common method