Another attempt to force Travis to use an old Node.js

Another attempt at 55ed290e1
2019-12-12 18:05:31 +00:00 · 2019-12-12 18:05:31 +00:00 · 28b9161301
commit 28b9161301
--- a/.travis.yml
+++ b/.travis.yml
@ -1,4 +1,5 @@
 language: node_js
+node_js:
  - "8"

 stages: