tests on py3.6-3.10

Author: rgaudin

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       max-parallel: 3
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8, 3.9, 3.10]
     steps:
       - name: install ffmpeg and gifsicle
         run: sudo apt update && sudo apt install ffmpeg gifsicle

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py36, py37, py38, black, coverage
+envlist = py36, py37, py38, py39, py310, black, coverage
 
 [testenv]
 passenv =