Dropped support for django 2.2 and 3.1

Author: WisdomPill

.github/workflows/ci.yml

@@ -15,22 +15,29 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - '3.6'
-          - '3.7'
           - '3.8'
           - '3.9'
           - '3.10'
         django-version:
-          - '2.2'
-          - '3.1'
           - '3.2'
           - '4.0'
           - '4.1'
         redis-version:
           - 'latest'
 
-        # only test pre-release dependencies for the latest Python
+        # Only test pre-release dependencies for the latest Python.
+        # And keep testing Django 3.2 with python 3.6 and 3.7
         include:
+          # Django 3.2 and python 3.6 with latest redis
+          - django-version: '3.2'
+            redis-version: 'latest'
+            python-version: '3.6'
+
+          # Django 3.2 and python 3.7 with latest redis
+          - django-version: '3.2'
+            redis-version: 'latest'
+            python-version: '3.7'
+
           # latest Django with pre-release redis
           - django-version: '4.0'
             redis-version: 'master'
@@ -46,20 +53,6 @@ jobs:
             redis-version: 'master'
             python-version: '3.10'
 
-        # exclude python 3.6 and 3.7 for django 4.x as they are not supported see https://docs.djangoproject.com/en/dev/releases/4.0/#python-compatibility
-        exclude:
-          - django-version: '4.1'
-            python-version: '3.6'
-
-          - django-version: '4.1'
-            python-version: '3.7'
-
-          - django-version: '4.0'
-            python-version: '3.6'
-
-          - django-version: '4.0'
-            python-version: '3.7'
-
     steps:
       - uses: actions/checkout@v2