[tox]
envlist = py36, py37, py38, py39

[testenv]
commands = {envpython} setup.py test --quiet

[tox]
envlist = py36, py37, py38, py39, py310

[testenv]
commands = {envpython} setup.py test --quiet

Add python3.10 to the supported python versions.
Add python3.10 to the supported python versions.
