.rubocop.yml in danger-swiftformat-0.7.0 vs .rubocop.yml in danger-swiftformat-0.8.0

@@ -1,10 +1,11 @@
 # Defaults can be found here: https://github.com/bbatsov/rubocop/blob/master/config/default.yml
 
 # If you don't like these settings, just delete this file :)
 
 AllCops:
-  TargetRubyVersion: 2.3
+  TargetRubyVersion: 2.4
+  NewCops: enable
 
 Style/StringLiterals:
   EnforcedStyle: double_quotes
   Enabled: true