Bump otp_release in Travic CI

kuenishi · kuenishi · commit d44013db31bc · 2016-09-10T18:31:02.000+09:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,7 +5,9 @@ script: PATH=.:$PATH make check-all
 notifications:
   email: false
 otp_release:
-  - 18.2.1
+  - 19.0
+  - 18.3
+  - 18.2
   - 18.1
   - 18.0
   - 17.5
