Merge pull request #487 from Shopify/array-intersect

Enable `Style/ArrayIntersect` cop

Author: sambostock

rubocop.yml

@@ -417,7 +417,7 @@ Style/ArgumentsForwarding:
   Enabled: false
 
 Style/ArrayIntersect:
-  Enabled: false
+  Enabled: true
 
 Style/BisectedAttrAccessor:
   Enabled: false

test/fixtures/full_config.yml

@@ -2323,7 +2323,7 @@ Style/ArrayCoercion:
   VersionAdded: '0.88'
 Style/ArrayIntersect:
   Description: Use `array1.intersect?(array2)` instead of `(array1 & array2).any?`.
-  Enabled: false
+  Enabled: true
   VersionAdded: '1.40'
 Style/ArrayJoin:
   Description: Use Array#join instead of Array#*.