Try to build with other OTP versions

lastres · lastres · commit f369aa3cccaa · 2018-06-07T14:54:28.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,9 @@
 language: erlang
 otp_release:
     - R16B03
+    - 17.5
+    - 18.3
+    - 19.3
+    - 20.3
 services:
 script: rebar compile && rebar skip_deps=true eunit
