Update Django and Python versions again

README.rst

@@ -15,7 +15,7 @@ Features:
 ---------
 
 -  Tested support to Python 3.7, 3.8, 3.9
--  Tested support to Django 2.0, 2.2, 3.0, 3.1
+-  Tested support to Django 2.2, 3.0, 3.1
 -  No database
 -  Support unlimited menus
 -  Icons support

docs/changelog.rst

@@ -9,7 +9,8 @@ CHANGELOG
 
 - Project Enhancements:
   - Dropping support for Python <3.7
-  - Dropping support for Django <2.0
+  - Dropping support for Django <2.2
+  - Adding support for Python 3.9
   - Forked as django-menu-generator-ng due to lack of maintenance
 
 1.1.0(2020-11-15)

tox.ini

 # content of: tox.ini , put in same dir as setup.py
 [tox]
 envlist =
-    py37-django{20,21,22,30,31},
-    py38-django{20,21,22,30,31}
+    py37-django{22,30,31},
+    py38-django{22,30,31}
+    py39-django{22,30,31}
 [testenv]
 deps=django
      coverage