travis: move to 'trusty' dist

the old 'precise' environment doesn't have py3.7 available
2018-07-11 13:30:46 -07:00 · 2018-07-11 13:30:46 -07:00 · ef32b23fe9
commit ef32b23fe9
parent 1181a7dba7
1 changed files with 1 additions and 0 deletions
--- a/.travis.yml
+++ b/.travis.yml
@ -1,4 +1,5 @@
 sudo: false
+dist: trusty
 language: python
 cache: pip
 before_cache: