Drop support for Django 3.1

Author: hramezani

.github/workflows/main.yml

@@ -80,18 +80,10 @@ jobs:
           python: 3.9
           allow_failure: false
 
-        - name: py39-dj31-postgres-xdist-coverage
-          python: 3.9
-          allow_failure: false
-
         - name: py39-dj40-mysql_innodb-coverage
           python: 3.9
           allow_failure: false
 
-        - name: py37-dj31-mysql_innodb-coverage
-          python: 3.7
-          allow_failure: false
-
         - name: py36-dj22-sqlite-xdist-coverage
           python: 3.6
           allow_failure: false
@@ -104,10 +96,6 @@ jobs:
           python: 3.8
           allow_failure: false
 
-        - name: py38-dj31-sqlite-xdist-coverage
-          python: 3.8
-          allow_failure: false
-
         - name: py38-dj40-sqlite-xdist-coverage
           python: 3.8
           allow_failure: false
@@ -125,10 +113,6 @@ jobs:
           python: 3.5
           allow_failure: false
 
-        - name: py36-dj31-mysql_myisam-coverage
-          python: 3.6
-          allow_failure: false
-
         - name: py36-dj32-mysql_myisam-coverage
           python: 3.6
           allow_failure: false

README.rst

@@ -32,7 +32,7 @@ pytest-django allows you to test your Django project/applications with the
   <https://pytest-django.readthedocs.io/en/latest/contributing.html>`_
 * Version compatibility:
 
-  * Django: 2.2, 3.1, 3.2, 4.0 and latest main branch (compatible at the time of
+  * Django: 2.2, 3.2, 4.0 and latest main branch (compatible at the time of
     each release)
   * Python: CPython>=3.5 or PyPy 3
   * pytest: >=5.4

setup.cfg

@@ -14,7 +14,6 @@ classifiers =
     Development Status :: 5 - Production/Stable
     Framework :: Django
     Framework :: Django :: 2.2
-    Framework :: Django :: 3.1
     Framework :: Django :: 3.2
     Framework :: Django :: 4.0
     Intended Audience :: Developers

tox.ini

@@ -1,10 +1,10 @@
 [tox]
 envlist =
     py310-dj{main,40,32}-postgres
-    py39-dj{main,40,32,31,22}-postgres
-    py38-dj{main,40,32,31,22}-postgres
-    py37-dj{32,31,22}-postgres
-    py36-dj{32,31,22}-postgres
+    py39-dj{main,40,32,22}-postgres
+    py38-dj{main,40,32,22}-postgres
+    py37-dj{32,22}-postgres
+    py36-dj{32,22}-postgres
     py35-dj{22}-postgres
     linting
 
@@ -14,7 +14,6 @@ deps =
     djmain: https://github.com/django/django/archive/main.tar.gz
     dj40: Django>=4.0,<4.1
     dj32: Django>=3.2,<4.0
-    dj31: Django>=3.1,<3.2
     dj22: Django>=2.2,<2.3
 
     mysql_myisam: mysqlclient==2.1.0