Django 2.0 adoption

- woo

Closes #72
2 jobs for 72-django-two-dot-oh in 1 minute and 27 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #4071
whats-open-py3.5

00:01:25

passed #4072
whats-open-py3.6

00:01:26