Add Django 4.0 support

CHANGELOG.md

@@ -3,6 +3,7 @@
 - Drop support for Python 2.7, 3.5 and 3.6
 - Add support for Python 3.10
 - Drop support for Django 1.11, 2.0, 2.1, 3.0 and 3.1
+- Add support for Django 4.0
 - Fix index creation detection when table is being created in the transaction (issue #178)
 
 ## 3.0.1

setup.py

@@ -53,6 +53,7 @@ setup(
         "Framework :: Django",
         "Framework :: Django :: 2.2",
         "Framework :: Django :: 3.2",
+        "Framework :: Django :: 4.0",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.7",

tests/test_project/urls.py

@@ -13,7 +13,7 @@ Including another URLconf
     1. Import the include() function: from django.urls import include, path
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
-from django.conf.urls import url
 from django.contrib import admin
+from django.urls import path
 
-urlpatterns = [url("admin/", admin.site.urls)]
+urlpatterns = [path("admin/", admin.site.urls)]

tox.ini

@@ -2,6 +2,7 @@
 envlist =
     py{37,38,39}-django22
     py{37,38,39,310}-django32
+    py{38,39,310}-django40
     lint
     coverage
 
@@ -19,6 +20,7 @@ pip_pre = true
 deps =
     django22: django>=2.2,<2.3
     django32: django>=3.2,<3.3
+    django40: django>=4.0,<4.1
 
 [testenv:lint]
 basepython = python3.8