Test current versions of Python

Author: CendioOssman

.github/workflows/test.yml

@@ -14,6 +14,8 @@ jobs:
           - 3.7
           - 3.8
           - 3.9
+          - "3.10"
+          - 3.11
       fail-fast: false
     steps:
       - uses: actions/checkout@v2