Add testing and document support for Python 3.7

Python 3.7 was released on June 27, 2018.

https://docs.python.org/3/whatsnew/3.7.html

1 files changed, 2 insertions, 2 deletions

diff --git a/tox.ini b/tox.ini
index f9a3226c..dbc0ea86 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,8 +1,8 @@
 [tox]
 envlist =
     isort-check,
-    py27, py34, py35, py36, pypy,
-    lint
+    lint,
+    py{27,34,35,36,37,py}
 
 [testenv]
 deps = pytest