ci: Update node versions, drop v4/v6, add v10/v12

jhermsmeier · jhermsmeier · commit 18606319df14 · 2020-12-13T16:08:23.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,8 +1,8 @@
 language: node_js
 node_js:
   - stable
+  - 12
+  - 10
   - 8
-  - 6
-  - 4
 script:
   - npm test
