Add support for Django 3.1 (#713)

* Add django 3.1 to test matrix

* Add django 3.1 to supported versions in README

* Update AUTHORS.rst

* Add Django 3.1 to `setup.py`

* Update CHANGES

Author: martinfrancois

.travis.yml

@@ -16,6 +16,7 @@ env:
   - DJANGO="Django>=2.1,<2.2"
   - DJANGO="Django>=2.2,<2.3"
   - DJANGO="Django>=3.0,<3.1"
+  - DJANGO="Django>=3.1,<3.2"
 
 install:
   - pip install -U coverage codecov
@@ -55,5 +56,11 @@ matrix:
       env: DJANGO="Django>=3.0,<3.1"
     - python: 3.5
       env: DJANGO="Django>=3.0,<3.1"
+    - python: 2.7
+      env: DJANGO="Django>=3.1,<3.2"
+    - python: 3.4
+      env: DJANGO="Django>=3.1,<3.2"
+    - python: 3.5
+      env: DJANGO="Django>=3.1,<3.2"
 
 after_success: codecov

AUTHORS.rst

@@ -37,6 +37,7 @@ Authors
 - Erik van Widenfelt (`erikvw <https://github.com/erikvw>`_)
 - Filipe Pina (@fopina)
 - Florian Eßer
+- François Martin (`martinfrancois <https://github.com/martinfrancois>`_)
 - Frank Sachsenheim
 - George Kettleborough (`georgek <https://github.com/georgek>`_)
 - George Vilches

CHANGES.rst

@@ -11,6 +11,7 @@ Unreleased
   ``bulk_update_with_history`` instead of ``objects`` (gh-703)
 - Add optional ``manager`` argument to ``bulk_update_with_history`` to use instead of
   the default manager (gh-703)
+- Add support for Django 3.1 (gh-713)
 
 2.11.0 (2020-06-20)
 -------------------

README.rst

@@ -46,6 +46,7 @@ This app supports the following combinations of Django and Python:
 2.1         3.5, 3.6, 3.7
 2.2         3.5, 3.6, 3.7, 3.8
 3.0         3.6, 3.7, 3.8
+3.1         3.6, 3.7, 3.8
 ==========  =======================
 
 Getting Help

setup.py

@@ -34,6 +34,7 @@
             "Framework :: Django :: 2.1",
             "Framework :: Django :: 2.2",
             "Framework :: Django :: 3.0",
+            "Framework :: Django :: 3.1",
             "Programming Language :: Python",
             "Programming Language :: Python :: 2.7",
             "Programming Language :: Python :: 3",

tox.ini

@@ -5,6 +5,7 @@ envlist =
     py{35,36,37}-django21,
     py{35,36,37,38}-django22,
     py{36,37,38}-django30,
+    py{36,37,38}-django31,
     py{36,37,38}-djangotrunk,
     docs, flake8