.rubocop.yml in nutrella-1.4.0 vs .rubocop.yml in nutrella-1.5.0

@@ -1,7 +1,6 @@
 require:
-  - rubocop-performance
   - rubocop-rspec
 
 AllCops:
   TargetRubyVersion: 2.5
 
@@ -10,13 +9,25 @@
 
 # Rubocop and I cannot agree.
 Layout/MultilineMethodCallBraceLayout:
   Enabled: false
 
+Layout/SpaceAroundMethodCallOperator:
+  Enabled: true
+
+Lint/RaiseException:
+  Enabled: true
+
+Lint/StructNewOverride:
+  Enabled: true
+
 Metrics/BlockLength:
   Enabled: false
 
+Naming/MemoizedInstanceVariableName:
+  EnforcedStyleForLeadingUnderscores: required
+
 RSpec/AnyInstance:
   Enabled: false
 
 RSpec/ExampleLength:
   Max: 15
@@ -42,9 +53,18 @@
 RSpec/MultipleExpectations:
   Max: 3
 
 RSpec/SubjectStub:
   Enabled: false
+
+Style/BlockDelimiters:
+  Enabled: true
+  EnforcedStyle: line_count_based
+  BracesRequiredMethods:
+    - 'let'
+
+Style/ExponentialNotation:
+  Enabled: true
 
 # We can ignore this small performance improvement.
 Style/FrozenStringLiteralComment:
   Enabled: false