Try xenial for travis

johanlundberg · johanlundberg · commit e992522bd83d · 2019-01-14T18:45:40.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,5 @@
 sudo: false
+dist: xenial
 language: python
 python:
   - 2.7
