message: Use c++17 in clang-format
diff: @@ -34,14 +34,6 @@ IndentWidth: 4
  KeepEmptyLinesAtTheStartOfBlocks: false
  MaxEmptyLinesToKeep: 2
  NamespaceIndentation: None
  -ObjCSpaceAfterProperty: false
  -ObjCSpaceBeforeProtocolList: false
  -PenaltyBreakBeforeFirstCallParameter: 1
  -PenaltyBreakComment: 300
  -PenaltyBreakFirstLessLess: 120
  -PenaltyBreakString: 1000
  -PenaltyExcessCharacter: 1000000
  -PenaltyReturnTypeOnItsOwnLine: 200
  PointerAlignment: Left
  SpaceBeforeAssignmentOperators: true
  SpaceBeforeParens: ControlStatements
  @@ -51,6 +43,5 @@ SpacesInAngles: false
  SpacesInContainerLiterals: true
  SpacesInCStyleCastParentheses: false
  SpacesInParentheses: false
  -Standard: Cpp11
  -TabWidth: 8
  +Standard: c++17
  UseTab: Never
  