Build against python 3.7
language: python
-python:
-- '2.7'
-- '3.4'
-- '3.6'
+matrix:
+ include:
+ - python: '3.7'
+ dist: xenial
+ sudo: true
+ - python: '3.6'
+ - python: '3.4'
+ - python: '2.7'
before_install:
- pip install coveralls
- pip uninstall pytest --yes
