Added deployment targets to help with Carthage support.

3.0.1

Fix Cocoapods support

3.0.0

Initial Swift 4 support

2.1.3

Fixed crashing bug for weakShared instances that are accessed after t…

CocoaPod support

Works on Ubuntu 16.04 with Swift 3.0.2

Another Carthage build fix

Project cleanup

2.0.2

Forgot to update readme

2.0.1

Update Scheme so Carthage builds hopefully work again