Log Message:
py-django-classy-tags: updated to 1.0.0

1.0.0:
Extended test matrix
Added isort and adapted imports
Adapted code base to align with other supported addons
Adapted README.rst instructions
Added support for Django 3.0
Added support for Python 3.8

0.9.0:
Added testing for Django 1.11, 2.0, and 2.1; and dropped testing for older versions.
Added support for Python 3.6