Enable new cops (#97)

.rubocop.yml

@@ -8,6 +8,7 @@ AllCops:
     - 'spec/spec_helper.rb'
     - 'vendor/bundle/**/*'
   SuggestExtensions: false
+  NewCops: enable
 Style/StringLiterals:
   Enabled: false
 Style/Documentation:
@@ -25,64 +26,3 @@ Metrics/BlockLength:
     - 'spec/**/*'
 Metrics/MethodLength:
   Max: 15
-
-Gemspec/DeprecatedAttributeAssignment:
-  Enabled: true
-Layout/SpaceBeforeBrackets:
-  Enabled: true
-Lint/AmbiguousAssignment:
-  Enabled: true
-Lint/DeprecatedConstants:
-  Enabled: true
-Lint/DuplicateBranch:
-  Enabled: true
-Lint/DuplicateRegexpCharacterClassElement:
-  Enabled: true
-Lint/EmptyBlock:
-  Enabled: true
-Lint/EmptyClass:
-  Enabled: true
-Lint/LambdaWithoutLiteralBlock:
-  Enabled: true
-Lint/NoReturnInBeginEndBlocks:
-  Enabled: true
-Lint/NumberedParameterAssignment:
-  Enabled: true
-Lint/OrAssignmentToConstant:
-  Enabled: true
-Lint/RedundantDirGlobSort:
-  Enabled: true
-Lint/SymbolConversion:
-  Enabled: true
-Lint/ToEnumArguments:
-  Enabled: true
-Lint/TripleQuotes:
-  Enabled: true
-Lint/UnexpectedBlockArity:
-  Enabled: true
-Lint/UnmodifiedReduceAccumulator:
-  Enabled: true
-Style/ArgumentsForwarding:
-  Enabled: true
-Style/CollectionCompact:
-  Enabled: true
-Style/DocumentDynamicEvalDefinition:
-  Enabled: true
-Style/EndlessMethod:
-  Enabled: true
-Style/HashConversion:
-  Enabled: true
-Style/HashExcept:
-  Enabled: true
-Style/IfWithBooleanLiteralBranches:
-  Enabled: true
-Style/NegatedIfElseCondition:
-  Enabled: true
-Style/NilLambda:
-  Enabled: true
-Style/RedundantArgument:
-  Enabled: true
-Style/StringChars:
-  Enabled: true
-Style/SwapValues:
-  Enabled: true