tox==1.8.1
pytest-django==2.8.0
pytest==2.6.4
pytest-xdist

tox==1.8.1
pytest-django==2.8.0
pytest==2.6.4
pytest-xdist==1.11
pytest-cov==1.8.1

Add pytest-cov. Set version for pytest-xdist.
Add pytest-cov. Set version for pytest-xdist.
