Merge tag 'v7.0.0' into develop

- New: Add Django 4.0 support
- New: Add Python 3.10 support
- Fix: Drop Python 2 support
- Fix: Drop Python 3.6 support
- Fix: Drop support for EOL versions of Django (1 and 2)

Author: marteinn

django_react_templatetags/__init__.py

@@ -7,8 +7,8 @@
 """
 
 __title__ = "django_react_templatetags"
-__version__ = "6.0.2"
-__build__ = 602
+__version__ = "7.0.0"
+__build__ = 700
 __author__ = "Martin Sandström"
 __license__ = "MIT"
-__copyright__ = "Copyright 2015-2020 Fröjd Interactive"
+__copyright__ = "Copyright 2015-2021 Fröjd Interactive"