added Python 3.11 testing

Author: wolph

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
     timeout-minutes: 2
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
 
     steps:
       - uses: actions/checkout@v2

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = black, py37, py38, py39, py310, pypy3, flake8, docs
+envlist = black, py37, py38, py39, py310, py311, pypy3, flake8, docs
 skip_missing_interpreters = True
 
 [testenv]
@@ -8,6 +8,7 @@ basepython =
     py38: python3.8
     py39: python3.9
     py310: python3.10
+    py311: python3.11
     pypy: pypy
 
 setenv = PY_IGNORE_IMPORTMISMATCH=1