v1.0.0

Added

• Linux support

Changed

• Updated to Swift 4.0.3
• Significant performance improvements
• Move equatable == method to a static member to better conform with Swift3 conventions
• SetValueProtocol method renamed from func setValue(key: , value: ) to
  func set(value:, for:)
• Add support for running tests from XCode
• Updated examples in README.md to reflect current API
• Update String handling to not use .characters view per Swift4 conventions
• Use range(at:) instead of rangeAt(_:)