Run flake8 and publish on Python 3.7

diff --git a/.travis.yml b/.travis.yml
index 96e9887c87debe71ae1a9763c1af4117b63e20e3..01bf1185728a1eeeec04e86c418624c186a198a4 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,9 +13,10 @@ python:
 
 matrix:
   include:
-  - env:
+  - python: 3.7
+    env:
     - TOXENV=flake8
-  - python: 3.6
+  - python: 3.7
     env:
     - PUBLISH="true"
     install: