Updated project using Xcode 15.4

• updated to recommended project settings
• raised deployment targets to the minimum supported - iOS 12
• fixed compile time warnings

Xcode 14

• updated project settings using Xcode 14
• raised deployment target to iOS 11
• fixed deprecations and warnings

Xcode 12

• updated for Xcode 12
• raised iOS deployment target to 9.0
• updated swift package manager tools to 5.3

Swift Package Manager & Xcode 11

• added support for Swift Package Manager
• updated using Xcode 11 GM

Swift 5

• updated for Swift 5.0 using Xcode 10.2
• disabled parallel test execution

CocoaPods support

• added support for installation using CococaPods

1.0.1

- updated for swift 4.0 using xcode 9.0