build: support Node.js 12.x

dougwilson · dougwilson · commit cdbe4236d33c · 2019-06-30T20:56:33.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -15,6 +15,7 @@ node_js:
   - "9.11"
   - "10.16"
   - "11.15"
+  - "12.5"
 sudo: false
 dist: trusty
 env:
