MAINT: travis: use xenial for Python 3.7 builds
@@ -2,11 +2,15 @@ language: python
cache: pip
-python:
- - 2.7
- - 3.5
- - 3.6
- - 3.7
+# Enable 3.7 without globally enabling sudo and xenial
+matrix:
+ include:
+ - python: 2.7
+ - python: 3.5
+ - python: 3.6
+ - python: 3.7
+ dist: xenial
+ sudo: true
env:
global:
