Update Ruby version matrix

Author: JonRowe

.travis.yml

@@ -36,8 +36,8 @@ script: "script/run_build 2>&1"
 
 rvm:
   - 1.8.7
-  - 2.4.2
-  - 2.3.5
+  - 2.4.4
+  - 2.3.7
   - 2.2
   - 2.1
   - 2.0.0
@@ -65,17 +65,23 @@ matrix:
       env: RAILS_VERSION=5-0-stable
     - rvm: 2.2.2
       env: RAILS_VERSION=5.1.0
-    - rvm: 2.3.5
+    - rvm: 2.3.7
       env: RAILS_VERSION=master
-    - rvm: 2.3.5
+    - rvm: 2.3.7
       env: RAILS_VERSION=5-0-stable
-    - rvm: 2.3.5
+    - rvm: 2.3.7
       env: RAILS_VERSION=5.1.0
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION=master
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION=5-0-stable
-    - rvm: 2.4.2
+    - rvm: 2.4.4
+      env: RAILS_VERSION=5.1.0
+    - rvm: 2.5.1
+      env: RAILS_VERSION=master
+    - rvm: 2.5.1
+      env: RAILS_VERSION=5-0-stable
+    - rvm: 2.5.1
       env: RAILS_VERSION=5.1.0
   exclude:
     # 3.0.x is not supported on MRI 2.0+
@@ -85,9 +91,9 @@ matrix:
       env: RAILS_VERSION='~> 3.0.20'
     - rvm: 2.2
       env: RAILS_VERSION='~> 3.0.20'
-    - rvm: 2.3.5
+    - rvm: 2.3.7
       env: RAILS_VERSION='~> 3.0.20'
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION='~> 3.0.20'
     # 4.x is not supported on MRI ruby-1.8.7 or 1.9.2
     - rvm: 1.8.7
@@ -117,36 +123,34 @@ matrix:
     # MRI 2.2+ is not supported on a few versions
     - rvm: 2.2
       env: RAILS_VERSION='~> 3.1.12'
-    - rvm: 2.3.5
+    - rvm: 2.3.7
       env: RAILS_VERSION='~> 3.1.12'
     # MRI 2.4+ is not supported on a few versions
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION='~> 4.1.0'
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION=4-1-stable
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION='~> 4.0.4'
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION=4-0-stable
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION='~> 3.2.17'
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION=3-2-stable
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION='~> 3.1.12'
-    - rvm: 2.4.2
+    - rvm: 2.4.4
       env: RAILS_VERSION=5.2.0.rc1
   allow_failures:
     - rvm: 2.2.2
       env: RAILS_VERSION=master
-    - rvm: 2.3.5
+    - rvm: 2.3.7
       env: RAILS_VERSION=master
-    - rvm: 2.4.2
+    - rvm: 2.4.4
+      env: RAILS_VERSION=master
+    - rvm: 2.5.1
       env: RAILS_VERSION=master
-    - rvm: 2.4.2
-      env: RAILS_VERSION='~> 4.2.0'
-    - rvm: 2.4.2
-      env: RAILS_VERSION=4-2-stable
   fast_finish: true
 
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