.rubocop.yml in gistory-0.2.1 vs .rubocop.yml in gistory-0.3.0

@@ -1,7 +1,11 @@
 require: rubocop-rspec
 
+AllCops:
+  TargetRubyVersion: 2.4
+  NewCops: enable
+
 Metrics/AbcSize:
   Max: 25
   Exclude:
     - 'spec/**/*_spec.rb'
 
@@ -10,13 +14,10 @@
     - 'spec/**/*_spec.rb'
 
 Metrics/MethodLength:
   Max: 20
 
-Layout/EmptyLineAfterGuardClause:
-  Enabled: false
-
 Layout/LineLength:
   Max: 120
 
 Style/BlockDelimiters:
   Exclude:
@@ -39,49 +40,5 @@
 RSpec/MultipleExpectations:
   Max: 15
 
 RSpec/ExampleLength:
   Max: 15
-
-# starting rubocop 0.80 newly added cops need to be explicitly enabled:
-
-Lint/DeprecatedOpenSSLConstant:
-  Enabled: true
-
-Layout/EmptyLinesAroundAttributeAccessor:
-  Enabled: true
-
-Lint/MixedRegexpCaptureTypes:
-  Enabled: true
-
-Lint/RaiseException:
-  Enabled: true
-
-Layout/SpaceAroundMethodCallOperator:
-  Enabled: true
-
-Lint/StructNewOverride:
-  Enabled: true
-
-Style/ExponentialNotation:
-  Enabled: true
-
-Style/HashEachMethods:
-  Enabled: true
-
-Style/HashTransformKeys:
-  Enabled: true
-
-Style/HashTransformValues:
-  Enabled: true
-
-Style/RedundantFetchBlock:
-  Enabled: true
-
-Style/RedundantRegexpCharacterClass:
-  Enabled: true
-
-Style/RedundantRegexpEscape:
-  Enabled: true
-
-Style/SlicingWithRange:
-  Enabled: true