Update rubocop requirement from ~> 0.50.0 to ~> 0.67.1

[dependabot-preview]

Updates the requirements on rubocop to permit the latest version.

Release notes

Sourced from rubocop's releases.

RuboCop 0.67.1

Changes

• #6881: Set default PreferredName to e for Naming/RescuedExceptionsVariableName. (@​koic)

Changelog

Sourced from rubocop's changelog.

0.67.1 (2019-04-04)

Changes

• #6881: Set default PreferredName to e for Naming/RescuedExceptionsVariableName. (@​koic)

0.67.0 (2019-04-04)

New features

• #5184: Add new multiline element line break cops. ([@​maxh][])
• Add new cop Rails/ActiveRecordOverride that checks for overriding Active Record methods instead of using callbacks. ([@​elebow][])
• Add new cop Rails/RedundantAllowNil that checks for cases when allow_blank makes allow_nil unnecessary in model validations. ([@​elebow][])
• Add new Naming/RescuedExceptionsVariableName cop. ([@​AdrienSldy][])

Bug fixes

• #6761: Make Naming/UncommunicativeMethodParamName account for param names prefixed with underscores. ([@​thomthom][])
• #6855: Fix an exception in Rails/RedundantReceiverInWithOptions when the body is empty. ([@​ericsullivan][])
• #6856: Fix auto-correction for Style/BlockComments when the file is missing a trailing blank line. ([@​ericsullivan][])
• #6858: Fix an incorrect auto-correct for Lint/ToJSON when there are no to_json arguments. (@​koic)
• #6865: Fix deactivated StyleGuideBaseURL for Layout/ClassStructure. ([@​aeroastro][])
• #6868: Fix Rails/LinkToBlank auto-correct bug when using symbol for target. ([@​r7kamura][])
• #6869: Fix false positive for Rails/LinkToBlank when rel is a symbol value. ([@​r7kamura][])
• Add IncludedMacros param to default rubocop config for Style/MethodCallWithArgsParentheses. ([@​maxh][])
• #6785: Do not register an offense for Rails/Present or Rails/Blank in an unless else context when Style/UnlessElse is enabled. ([@​rrosenblum][])

Changes

• #6854: Mark Rails/LexicallyScopedActionFilter as unsafe and document risks. ([@​urbanautomaton][])
• #5977: Warn for Performance Cops. (@​koic)
• #6637: Move LstripRstrip from Performance to Style department and rename it to Strip. ([@​anuja-joshi][])
• #6875: Mention block form of Struct.new in Style/StructInheritance. ([@​XrXr][])
• #6871: Move Performance/RedundantSortBy, Performance/UnneededSort and Performance/Sample to the Style department. ([@​bbatsov][])

0.66.0 (2019-03-18)

New features

• #6393: Add AllowBracesOnProceduralOneLiners option to fine-tune Style/BlockDelimiter's semantic mode. ([@​davearonson][])
• #6383: Add AllowBeforeTrailingComments option on Layout/ExtraSpacing cop. ([@​davearonson][])
• New cop Lint/SafeNavigationWithEmpty checks for foo&.empty? in conditionals. ([@​rspeicher][])
• Add new Style/ConstantVisibility cop for enforcing visibility declarations of class and module constants. ([@​drenmi][])
• #6378: Add Lint/ToJSON cop to enforce an argument when overriding #to_json. ([@​allcentury][])
• #6346: Add auto-correction to Rails/TimeZone. ([@​dcluna][])
• #6840: Node patterns now allow unlimited elements after .... ([@​marcandre][])

Bug fixes

• #4321: Fix false offense for Style/RedundantSelf when the method is also defined on Kernel. ([@​mikegee][])

... (truncated)

Commits

• 01918a1 Cut 0.67.1
• d0677d7 Set default PreferredName to e for Naming/RescuedExceptionsVariableName
• 1d0e480 Cut 0.67
• 2513212 Fix the manual
• f0959e8 Add new Naming/RescuedExceptionsVariableName cop
• b05bb15 [Fix #6785] Make Rails/Blank and Rails/Present aware of Style/UnlessElse
• 93b1fc1 Update a bit of cop metadata
• ad5c5f9 [Fix #5184] Add new multiline element line break cops (#6824)
• 2a4dfca Add STDERR.puts check to Style/StderrPuts cop
• 32ed7d1 [Fix #6871] Move several performance cops to the style department
• Additional commits viewable in compare view

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