.rubocop.yml in quiz_api_client-2.9.0 vs .rubocop.yml in quiz_api_client-3.0.0

@@ -1,7 +1,7 @@
 AllCops:
-  TargetRubyVersion: 2.3
+  TargetRubyVersion: 2.4
 
 Metrics/ClassLength:
   Max: 200 # Default: 100
 
 Metrics/LineLength:
@@ -14,10 +14,13 @@
   Max: 30
   Exclude:
     - quiz_api_client.gemspec
     - spec/**/*.rb
 
+Naming/MemoizedInstanceVariableName:
+  EnforcedStyleForLeadingUnderscores: required
+
 Layout/AlignParameters:
   # Alignment of parameters in multi-line method calls.
   #
   # The `with_fixed_indentation` style aligns the following lines with one
   # level of indentation relative to the start of the line with the method call.
@@ -27,11 +30,11 @@
   EnforcedStyle: with_fixed_indentation
 
 Layout/CaseIndentation:
   EnforcedStyle: end
 
-Lint/EndAlignment:
+Layout/EndAlignment:
   EnforcedStyleAlignWith: variable
 
 Style/ClassAndModuleChildren:
   # Checks the style of children definitions at classes and modules.
   #
@@ -57,15 +60,13 @@
   # Namespace modules are modules that have nothing in their bodies except
   # classes or other modules.
   Enabled: false
 
 Style/FrozenStringLiteralComment:
-  # `when_needed` will add the frozen string literal comment to files
-  # only when the `TargetRubyVersion` is set to 2.3+.
   # `always` will always add the frozen string literal comment to a file
   # regardless of the Ruby version or if `freeze` or `<<` are called on a
   # string literal. If you run code against multiple versions of Ruby, it is
   # possible that this will create errors in Ruby 2.3.0+.
   #
   # See: https://wyeworks.com/blog/2015/12/1/immutable-strings-in-ruby-2-dot-3
-  EnforcedStyle: when_needed
+  EnforcedStyle: always
   Enabled: false