Building the framework for Xcode 11

[pushp1989]

added Change based on Xcode 11 Supports

What's in this pull request?

This is to support building the framework support for Xcode 11 and Swift 5

Why merge this pull request?

To be up to date with the releases

What's worth discussing about this pull request?

No

What downsides are there to merging this pull request?

No

@kouky @ryanbooker @robrix @broomburgo

[robrix]

I’m not (that I can recall) a collaborator on this repo, & I haven’t used Swift in years, so I’m unsubscribing from notifications to this.