test Python 3.9

Author: rmorshea

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8]
+        python-version: [3.7, 3.8, 3.9]
 
     steps:
       - uses: actions/checkout@v2

tox.ini

@@ -1,13 +1,14 @@
 
 [tox]
 envlist =
-    py37-nocov,
-    py38-{cov,mypy,lint,docs}
+    py3{7,8}-nocov,
+    py39-{cov,mypy,lint,docs}
 
 [gh-actions]
 python =
     3.7: py37-nocov
-    3.8: py38-{cov,mypy,lint,docs}
+    3.8: py38-nocov
+    3.9: py39-{cov,mypy,lint,docs}
 
 [testenv]
 wheel = true