added Elixir 1.8.1 to travis

Gerrit Riessen · bjhaid · commit 455fb652cfbf · 2019-03-19T14:54:55.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -8,6 +8,8 @@ cache:
     - _build
 matrix:
   include:
+    - elixir: 1.8.1
+      otp_release: 21.1
     - elixir: 1.7.4
       otp_release: 21.1
     - elixir: 1.6.6
