.travis.yml in figure_set-0.0.4 vs .travis.yml in figure_set-1.0.0

@@ -6,13 +6,10 @@
   - "bundle exec rake compile"
 script:
   - "bundle exec rake test"
 cache: bundler
 rvm:
-  - 2.0.0
-  - 2.1.8
-  - 2.2.4
-  - 2.3.0
-  - ruby-head
-notifications:
-  emails:
-    - [e-mail]
+  - 2.2.9
+  - 2.3.6
+  - 2.4.3
+  - 2.5.0
+bundler_args: --jobs 3 --retry 3