Django 4 compatibility

Makes the project Django 4 compatible

2.0.1

• Fix setup.py LONG_DESCRIPTION for PyPi documentation

2.0.0

• Bump version to 2.0.0
• BI Change Remove django-user-accounts template tags from pinax-documents templates. Requires pinax-documents>=1.0.2+

1.0.4

• Add pinax-calendars templates

1.0.3

• Add pinax-waitinglist templates

1.0.2

• fix urlname reference for pinax-invitations

1.0.1

• Update django>=1.11 in requirements
• Remove pytest from CI
• Add PyPi-compatible docs in setup.py
• Revise trove classifiers
• Improve .gitignore
• Update CI configuration