Adds the necessary Travis environment variables for tox to install Django 2.0 and run tests against it.
The only thing required to get the unit tests to pass was to add on_delete to ForeignKeys.
Failing to get the integration tests to pass as the test harness relies on pre-Django 2.0 things, starting with changes to include() and the namespacing of apps with the app_name or app_namespace kwarg.
Adds the necessary Travis environment variables for tox to install Django 2.0 and run tests against it.
The only thing required to get the unit tests to pass was to add
on_deletetoForeignKeys. Failing to get the integration tests to pass as the test harness relies on pre-Django 2.0 things, starting with changes toinclude()and the namespacing of apps with theapp_nameorapp_namespacekwarg.