Drop official support for Django 4.0

Out of support upstream. We still support 3.2 so in practice it will
work.

Author: bluetech

.github/workflows/main.yml

@@ -97,10 +97,6 @@ jobs:
           python: '3.8'
           allow_failure: false
 
-        - name: py38-dj40-sqlite-xdist-coverage
-          python: '3.8'
-          allow_failure: false
-
         - name: py37-dj32-sqlite-xdist-coverage
           python: '3.7'
           allow_failure: false

docs/changelog.rst

@@ -13,6 +13,8 @@ Improvements
 
 * Drop support for Python version 3.6.
 
+* Drop official support for Django 4.0.
+
 * Add precise `pytest_django.asserts.assertQuerySetEqual` typing.
 
 v4.5.2 (2021-12-07)

setup.cfg

@@ -14,7 +14,6 @@ classifiers =
     Development Status :: 5 - Production/Stable
     Framework :: Django
     Framework :: Django :: 3.2
-    Framework :: Django :: 4.0
     Framework :: Django :: 4.1
     Framework :: Django :: 4.2
     Intended Audience :: Developers

tox.ini

@@ -1,9 +1,9 @@
 [tox]
 envlist =
     py311-dj{main,42,41}-postgres
-    py310-dj{main,42,41,40,32}-postgres
-    py39-dj{main,42,41,40,32}-postgres
-    py38-dj{main,42,41,40,32}-postgres
+    py310-dj{main,42,41,32}-postgres
+    py39-dj{main,42,41,32}-postgres
+    py38-dj{main,42,41,32}-postgres
     py37-dj{32}-postgres
     linting
 
@@ -13,7 +13,6 @@ deps =
     djmain: https://github.com/django/django/archive/main.tar.gz
     dj42: Django>=4.2,<4.3
     dj41: Django>=4.1,<4.2
-    dj40: Django>=4.0,<4.1
     dj32: Django>=3.2,<4.0
 
     mysql_myisam: mysqlclient==2.1.0