Lint: Permit double negation

[ci skip]

.rubocop.yml

@@ -34,6 +34,11 @@ Style/BlockDelimiters:
 Style/DotPosition:
   EnforcedStyle: trailing
 
+# Use double negation wherever it would otherwise be impractical to convert
+# a value to an actual boolean.
+Style/DoubleNegation:
+  Enabled: false
+
 # The Ruby Style Guide says:
 #
 # > Use \ instead of + or << to concatenate two string literals at line end.

.rubocop_todo.yml

@@ -62,11 +62,6 @@ Style/ClassAndModuleChildren:
 Style/Documentation:
   Enabled: false
 
-# Offense count: 4
-Style/DoubleNegation:
-  Exclude:
-    - 'lib/paper_trail.rb'
-
 # Offense count: 1
 # Cop supports --auto-correct.
 # Configuration parameters: EnforcedStyle, SupportedStyles, IndentationWidth.