.rubocop.yml in gemfilelint-0.3.0 vs .rubocop.yml in gemfilelint-0.4.0

- old
+ new

@@ -1,9 +1,11 @@
 AllCops:
   DisplayCopNames: true
   DisplayStyleGuide: true
   TargetRubyVersion: 2.7
+  NewCops: enable
+  SuggestExtensions: false
   Exclude:
   - 'vendor/**/*'
 
 Gemspec/RequiredRubyVersion:
   Enabled: false
@@ -11,8 +13,11 @@
 Style/Documentation:
   Enabled: false
 
 Style/ExplicitBlockArgument:
   Enabled: false
+
+Style/StringLiterals:
+  EnforcedStyle: double_quotes
 
 Style/StructInheritance:
   Enabled: false