.travis.yml in hanko-0.1.6 vs .travis.yml in hanko-0.2.0

@@ -3,34 +3,15 @@
   - gem install bundler
 before_script:
   - bundle update
 cache: bundler
 rvm:
-  - 2.0.0
-  - 2.1.10
-  - 2.2.6
-  - 2.3.3
-  - 2.4.0-preview3
+  - 2.2.7
+  - 2.3.4
+  - 2.4.1
 gemfile:
-  - gemfiles/rails3.gemfile
-  - gemfiles/rails40.gemfile
-  - gemfiles/rails41.gemfile
   - gemfiles/rails42.gemfile
   - gemfiles/rails50.gemfile
+  - gemfiles/rails51.gemfile
 matrix:
-  exclude:
-    - rvm: 2.0.0
-      gemfile: gemfiles/rails50.gemfile
-    - rvm: 2.1.10
-      gemfile: gemfiles/rails50.gemfile
-    - rvm: 2.3.3
-      gemfile: gemfiles/rails40.gemfile
-    - rvm: 2.3.3
-      gemfile: gemfiles/rails3.gemfile
-    - rvm: 2.4.0-preview3
-      gemfile: gemfiles/rails40.gemfile
-    - rvm: 2.4.0-preview3
-      gemfile: gemfiles/rails3.gemfile
-  allow_failures:
-    - rvm: 2.4.0-preview3
   fast_finish: true
 bundler_args: --jobs 3 --retry 3