Test against Node 8 and 10

blimmer · blimmer · commit efc86ce1b236 · 2018-08-30T15:57:13.000-06:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,9 @@
 language: node_js
 node_js:
-  - 4
-  - 6
+  - '4'
+  - '6'
+  - '8'
+  - '10'
 sudo: false
 cache:
   yarn: true
