Tests: run Django 3.2 first

Update tox.ini for Django 3.2 release

Author: medmunds

tox.ini

@@ -3,17 +3,17 @@ envlist =
     # Factors: django-python-extras
     # Test these environments first, to catch most errors early...
     lint
-    django31-py39-all
+    django32-py39-all
     django20-py35-all
     docs
     # ... then test all the other supported combinations:
-    django31-py{36,37,38,py3}-all
+    django32-py{36,37,38,py3}-all
+    django31-py{36,37,38,39,py3}-all
     django30-py{36,37,38,39,py3}-all
     django22-py{35,36,37,38,39,py3}-all
     django21-py{35,36,37,py3}-all
     django20-py{36,py3}-all
     # ... then prereleases (if available):
-    django32-py{36,37,38,39,py3}-all
     djangoDev-py{38,39,310,py3}-all
     # ... then partial installation (limit extras):
     django31-py37-{none,amazon_ses}