Test against for Django 2.2 release
Test against for Django 2.2 release

Announcement:
https://www.djangoproject.com/weblog/2019/apr/01/django-22-released/

Release notes:
https://docs.djangoproject.com/en/2.2/releases/2.2/

django-debug-toolbar/django-debug-toolbar,spookylukey/django-debug-toolbar,spookylukey/django-debug-toolbar,jazzband/django-debug-toolbar,jazzband/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar,jazzband/django-debug-toolbar,tim-schilling/django-debug-toolbar,tim-schilling/django-debug-toolbar,spookylukey/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar,tim-schilling/django-debug-toolbar