Add Python 3.10 and 3.11 to tox.ini

tox.ini

diff --git a/tox.ini b/tox.ini
index 67a3ccf..7ed1255 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist=py{27,35,36,py}-{nose,nose2,pytest2,pytest3,unit,unit2},py{37,38,39}-{nose,nose2,pytest3,unit,unit2}
+envlist=py{27,35,36,py}-{nose,nose2,pytest2,pytest3,unit,unit2},py{37,38,39,310,311}-{nose,nose2,pytest3,unit,unit2}
 [testenv]
 deps=
     nose