Run automated tests in Node 12 too

pimterry · pimterry · commit 3d5f06d14d5d · 2020-02-21T15:32:53.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,6 +3,7 @@ sudo: required
 language: node_js
 node_js:
 - node
+- '12'
 - '10.15.3'
 - '8'
 before_install:
