add 3.10 to job matrix

Author: joshuadavidthomas

.github/workflows/tests.yml

@@ -36,6 +36,7 @@ jobs:
           - "3.7"
           - "3.8"
           - "3.9"
+          - "3.10"
         exclude:
           # Windows 2.7 doesn't work because Microsoft removed stuff we needed.
           - os: windows-latest

tox.ini

@@ -19,6 +19,7 @@ envlist =
     py37-django{22,32},
     py38-django{22,32,tip},
     py39-django{22,32,tip},
+    py310-django{32,tip},
     check,pkgcheck,doc
 
 [testenv]
@@ -75,3 +76,4 @@ python =
     3.7: py37
     3.8: py38
     3.9: py39
+    3.10: py310