tox.ini: must define basepython for py36 and py37 for appveyor..

anthrotype · anthrotype · commit de113859d225 · 2018-07-25T11:08:58.000+01:00
diff --git a/tox.ini b/tox.ini
@@ -7,6 +7,8 @@ basepython =
     py27: {env:TOXPYTHON:python2.7}
     py34: {env:TOXPYTHON:python3.4}
     py35: {env:TOXPYTHON:python3.5}
+    py36: {env:TOXPYTHON:python3.6}
+    py37: {env:TOXPYTHON:python3.7}
 deps =
     defcon
     fontPens
