`MIDDLEWARE_CLASSES` has been [deprecated in favor of `MIDDLEWARE` ](https://docs.djangoproject.com/en/2.0/topics/http/middleware/#upgrading-pre-django-1-10-style-middleware) since django 2.0. We need to scrub it from the docs, tests, and examples.
MIDDLEWARE_CLASSEShas been deprecated in favor ofMIDDLEWAREsince django 2.0. We need to scrub it from the docs, tests, and examples.