stefanfoulis/django-filer — pull request #479 by gavinwahl (2014-12-23 00:27:32+00:00)
Title: Don't use multiple '==' version specifiers

PEP-440 specifies that 'The comma (",") is equivalent to a logical and operator: a candidate version must match all given version clauses in order to match the specifier as a whole.'

Fixes #477

See also https://github.com/pypa/pip/issues/2258