add matrix to support Django3.2

.travis.yml

@@ -8,6 +8,7 @@ python:
   - '3.6'
   - '3.7'
   - '3.8'
+  - '3.9'
 install: pip install tox-travis tox flake8 coverage codecov
 after_success: codecov
 services: redis-server

setup.py

@@ -29,11 +29,13 @@
         "Framework :: Django :: 2.2",
         "Framework :: Django :: 3.0",
         "Framework :: Django :: 3.1",
+        "Framework :: Django :: 3.2",
         "Programming Language :: Python :: 3",
         "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",
         "Topic :: System :: Logging",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",

tox.ini

@@ -1,13 +1,13 @@
 [tox]
-# Test against latest supported version of each of python 2 and 3 for
-# each Django version.
+# Test against latest supported version of each of python for each Django version.
 #
 # Also, make sure that all python versions used here are included in .travis.yml
 envlist =
     py{35,36,37}-django111-celery43-redis3-kombu4,
     py{35,36,37}-django2{0,1,2}-celery43-redis3-kombu4,
     py{36,37,38}-django3{0,1}-celery44-redis3-kombu4,
     py{36,37,38}-django31-celery50-redis3-kombu5,
+    py{36,37,38,39}-django32-celery51-redis3-kombu5,
     py36-django22-celery4{1,2}-redis3-kombu4,
     py36-django22-celery40-redis2-kombu41,
     py36-django22-celery3-redis2-kombu3,
@@ -31,12 +31,14 @@ deps =
     celery43: Celery >=4.3, <4.4
     celery44: Celery >=4.4, <4.5
     celery50: Celery >=5.0, <5.1
+    celery51: Celery >=5.1, <5.2
     django111: Django >=1.11, <2.0
     django20: Django >=2.0, <2.1
     django21: Django >=2.1, <2.2
     django22: Django >=2.2, <2.3
     django30: Django >=3.0, <3.1
     django31: Django >=3.1, <3.2
+    django32: Django >=3.2, <3.3
     -r{toxinidir}/requirements/ci.txt
 
 commands = pytest --cov=./test_app --cov=./django_structlog --cov-append test_app