Drop Django 3.0 support.

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
       max-parallel: 5
       matrix:
         python-version: ['3.6', '3.7', '3.8', '3.9']
-        django-version: ['2.2', '3.0', '3.1', 'main']
+        django-version: ['2.2', '3.1', 'main']
 
     steps:
     - uses: actions/checkout@v2

CHANGELOG

@@ -8,7 +8,7 @@ future releases, check `milestones`_ and :doc:`/about/vision`.
 2.3 (unreleased)
 ----------------
 
-- Nothing changed yet.
+- Drop Django 3.0 support
 
 
 2.2 (unreleased)

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{36,37,38,39}-dj{22,30,31}
+    py{36,37,38,39}-dj{22,31}
     py{38,39}-djmain
     lint
     sphinx
@@ -16,7 +16,6 @@ python =
 [gh-actions:env]
 DJANGO =
     2.2: dj22
-    3.0: dj30
     3.1: dj31
     main: djmain
 
@@ -24,7 +23,6 @@ DJANGO =
 deps =
     coverage
     dj22: Django>=2.2,<3.0
-    dj30: Django>=3.0,<3.1
     dj31: Django>=3.1,<3.2
     djmain: https://github.com/django/django/archive/main.tar.gz
     nose