Add support for Swift 5.5

• Disable the await function for clients on Swift 5.5 and introduce a new waitFor function instead. This is needed because the await function conflicts with the await concurrency keyword introduced in Swift 5.5 and leads to compiler error.

Fixed background issue across different OS versions

Fixed

• Fixed an issue with entering background states on different OS versions. (issue #135)

Swift Package Manager support

• Added support for double tapping, long pressing and two finger tapping, with default implementations for any Elements that conform to Tappable. (issue #88)
• Added Swift Package Manager support
• Added a Refreshable protocol so for each element/screen that conforms to protocol refresh function can be defined
• Added a DatePicker element. (issue #55)
• Added the ability to access value directly from an element

Fixed Image element support for Carthage

Fixed

• Image.swift wasn't added to the main framework meaning it wouldn't work for Carthage
• Build issue with brew on Travis' 12.4 image

Support for Swift 5.0

This release adds support for Swift 5.0