.travis.yml in hamlit-2.3.1 vs .travis.yml in hamlit-2.4.0

@@ -5,28 +5,28 @@
     - master
 script:
   - "bundle exec rake $TASK"
 matrix:
   include:
-    - rvm: 2.1
+    - rvm: 2.1.10
       env: TASK=test
-    - rvm: 2.2
+    - rvm: 2.2.5
       env: TASK=test
-    - rvm: 2.3.0
+    - rvm: 2.3.1
       env: TASK=test
-    - rvm: 2.3.0
+    - rvm: 2.3.1
       env: TASK=bench TEMPLATE=benchmark/boolean_attribute.haml,benchmark/class_attribute.haml,benchmark/id_attribute.haml,benchmark/data_attribute.haml,benchmark/common_attribute.haml
-    - rvm: 2.3.0
+    - rvm: 2.3.1
       env: TASK=bench TEMPLATE=benchmark/dynamic_attributes/boolean_attribute.haml,benchmark/dynamic_attributes/class_attribute.haml,benchmark/dynamic_attributes/id_attribute.haml,benchmark/dynamic_attributes/data_attribute.haml,benchmark/dynamic_attributes/common_attribute.haml
-    - rvm: 2.3.0
+    - rvm: 2.3.1
       env: TASK=bench SLIM_BENCH=1
-    - rvm: 2.3.0
+    - rvm: 2.3.1
       env: TASK=bench TEMPLATE=benchmark/etc/attribute_builder.haml
-    - rvm: 2.3.0
+    - rvm: 2.3.1
       env: TASK=bench TEMPLATE=benchmark/etc/static_analyzer.haml
-    - rvm: 2.3.0
+    - rvm: 2.3.1
       env: TASK=bench TEMPLATE=benchmark/etc/string_interpolation.haml
-    - rvm: 2.3.0
+    - rvm: 2.3.1
       env: TASK=bench TEMPLATE=test/haml/templates/standard.haml COMPILE=1
   allow_failures:
     - env: TASK=bench TEMPLATE=benchmark/boolean_attribute.haml,benchmark/class_attribute.haml,benchmark/id_attribute.haml,benchmark/data_attribute.haml,benchmark/common_attribute.haml
     - env: TASK=bench TEMPLATE=benchmark/dynamic_attributes/boolean_attribute.haml,benchmark/dynamic_attributes/class_attribute.haml,benchmark/dynamic_attributes/id_attribute.haml,benchmark/dynamic_attributes/data_attribute.haml,benchmark/dynamic_attributes/common_attribute.haml
     - env: TASK=bench SLIM_BENCH=1