Allow development Django versions to be tested with Travis
Allow development Django versions to be tested with Travis
luzfcb/django-simple-history,treyhunner/django-simple-history,emergence/django-simple-history,treyhunner/django-simple-history,luzfcb/django-simple-history,pombredanne/django-simple-history,emergence/django-simple-history,pombredanne/django-simple-history