build: support Node.js 13.x

dougwilson · dougwilson · commit 98fed5228096 · 2019-11-07T00:10:28.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -16,6 +16,7 @@ node_js:
   - "10.17"
   - "11.15"
   - "12.13"
+  - "13.1"
 sudo: false
 dist: trusty
 env:
