add erlang test version

getong · getong · commit 9141bf9a8fc5 · 2017-08-18T06:53:46.000Z
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,8 @@
 language: erlang
 otp_release:
+  - 20.0
+  - 19.3
+  - 18.3
   - 17.0
 notifications:
   email: 
