test py3.9 and py3.10 and mpl 3.4 and 3.5

Author: Cadair

.github/workflows/python-package.yml

@@ -19,14 +19,14 @@ jobs:
           python-version: 3.6
           toxenv: py36-test-mpl20
         - os: macos-latest
-          python-version: 3.8
-          toxenv: py38-test-mpl31
+          python-version: 3.10
+          toxenv: py38-test-mpl35
         - os: windows-latest
           python-version: 3.6
           toxenv: py36-test-mpl20
         - os: windows-latest
-          python-version: 3.8
-          toxenv: py38-test-mpl31
+          python-version: 3.10
+          toxenv: py38-test-mpl35
         # Test all configurations on Linux
         - os: ubuntu-latest
           python-version: 3.6
@@ -41,14 +41,20 @@ jobs:
           python-version: 3.7
           toxenv: py37-test-mpl30
         - os: ubuntu-latest
-          python-version: 3.8
+          python-version: 3.7
           toxenv: py38-test-mpl31
         - os: ubuntu-latest
           python-version: 3.7
           toxenv: py37-test-mpl32
         - os: ubuntu-latest
           python-version: 3.8
           toxenv: py38-test-mpl33
+        - os: ubuntu-latest
+          python-version: 3.9
+          toxenv: py38-test-mpl34
+        - os: ubuntu-latest
+          python-version: 3.10
+          toxenv: py38-test-mpl35
 
     steps:
     - uses: actions/checkout@v2

tox.ini

@@ -1,8 +1,8 @@
 [tox]
 envlist =
-    py{37,38}-test-mpldev
-    py{36,37,38}-test-mpl{31,32,33}
-    py37-test-mpl30
+    py{36,310}-test-mpldev
+    py{36,37,38,39,310}-test-mpl{34,35}
+    py37-test-mpl{30,31,32,33}
     py36-test-mpl{20,21,22,30}
     codestyle
 requires =