Add dummy get_response callback to GripMiddleware (#82)
Add dummy get_response callback to GripMiddleware (#82)

A recent commit to Django (https://github.com/django/django/commit/4bb30fe5d598a7acd2a3055c5e66224cf42a75e9) made get_response a required positional argument in MiddlewareMixin.__init__().

This commits add a dummy get_response callback which makes django-eventstream usable with recent Django versions.
fanout/django-eventstream,fanout/django-eventstream