Run tox against versions of Python I can still install

Author: borntyping

tox.ini

@@ -1,12 +1,12 @@
 [tox]
 minversion=1.9.0
-envlist=py{26,27,34,35}-{test,covr},docs,py{27,34,35}-lint
+envlist=py{26,27,34,35,36,37,38,39,310}-{test,covr},docs,py{27,34,35,36,37,38,39,310}-lint
 
 [testenv]
 commands=
-    test: py.test riemann_client tests
+    test: pytest riemann_client tests
     lint: flake8 --config tox.ini riemann_client tests
-    covr: coverage run --rcfile tox.ini --source riemann_client --module py.test
+    covr: coverage run --rcfile tox.ini --source riemann_client --module pytest
     covr: coverage report --rcfile tox.ini
 deps=
     test: pytest
@@ -15,7 +15,7 @@ deps=
     covr: coverage
 
 [pytest]
-addopts=-qq --strict --tb=short
+addopts=-qq --tb=short
 
 [flake8]
 exclude=riemann_client/riemann_py*_pb2.py
@@ -38,7 +38,7 @@ exclude_lines=
 # $ tox -e docs && firefox docs/_build/index.hmtl
 
 [testenv:docs]
-basepython=python2.7
+basepython=python3.10
 commands=sphinx-build -q -QE docs/ docs/_build/
 deps=
     sphinx
@@ -47,10 +47,6 @@ deps=
 # Build a source package and python2/3 specific wheel packages
 # $ tox -e "py{27,35}-release"
 
-[testenv:py27-release]
-commands=python setup.py bdist_wheel upload
-deps=wheel
-
-[testenv:py35-release]
+[testenv:py310-release]
 commands=python setup.py sdist bdist_wheel upload
 deps=wheel