Add tests for Python 3.9

Author: LincolnPuzey

.travis.yml

@@ -31,12 +31,16 @@ matrix:
       env: TOXENV=py37-django22
     - python: 3.8
       env: TOXENV=py38-django22
+    - python: 3.9
+      env: TOXENV=py39-django22
     - python: 3.6
       env: TOXENV=py36-django30
     - python: 3.7
       env: TOXENV=py37-django30
     - python: 3.8
       env: TOXENV=py38-django30
+    - python: 3.9
+      env: TOXENV=py39-django30
     - python: 3.6
       env: TOXENV=py36-flake8
     - python: 3.6

CLASSIFIERS.txt

@@ -9,6 +9,7 @@ Programming Language :: Python :: 3.5
 Programming Language :: Python :: 3.6
 Programming Language :: Python :: 3.7
 Programming Language :: Python :: 3.8
+Programming Language :: Python :: 3.9
 Framework :: Django
 Framework :: Django :: 1.11
 Framework :: Django :: 2.0

ChangeLog.rst

@@ -9,6 +9,7 @@ master
 *New:*
     - Drop support of Python 2.7
     - Confirm support of Python 3.8
+    - Confirm support of Python 3.9
     - Confirm support of Django 3.0
 
 .. _v1.4.1:

README.rst

@@ -19,17 +19,17 @@ This package is compatible and tested with the following Python & Django version
 
 
 
-+---------------+---------------------------------------+
-| Django        | Python                                |
-+===============+=======================================+
-| 1.11          | 3.5, 3.6, 3.7 (as of 1.11.17)         |
-+---------------+---------------------------------------+
-| 2.0, 2.1      | 3.5, 3.6, 3.7                         |
-+---------------+---------------------------------------+
-| 2.2           | 3.5, 3.6, 3.7, 3.8 (as of 2.2.8)      |
-+---------------+---------------------------------------+
-| 3.0           | 3.6, 3.7, 3.8                         |
-+---------------+---------------------------------------+
++---------------+------------------------------------------------------+
+| Django        | Python                                               |
++===============+======================================================+
+| 1.11          | 3.5, 3.6, 3.7 (as of 1.11.17)                        |
++---------------+------------------------------------------------------+
+| 2.0, 2.1      | 3.5, 3.6, 3.7                                        |
++---------------+------------------------------------------------------+
+| 2.2           | 3.5, 3.6, 3.7, 3.8 (as of 2.2.8), 3.9 (as of 2.2.17) |
++---------------+------------------------------------------------------+
+| 3.0           | 3.6, 3.7, 3.8, 3.9 (as of 3.0.11)                    |
++---------------+------------------------------------------------------+
 
 
 `Full documentation <http://django-dirtyfields.readthedocs.org/en/develop/>`_

tox.ini

@@ -2,8 +2,8 @@
 skipsdist = True
 envlist =
     py{35,36,37}-django{111,20,21}
-    py{35,36,37,38}-django{22}
-    py{36,37,38}-django{30}
+    py{35,36,37,38,39}-django{22}
+    py{36,37,38,39}-django{30}
     py36-flake8
     py36-django111-coverage
     py36-django111-postgresql