Ui control support#1

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jjamminjim wants to merge 5 commits intoarielpollack:masterfrom

jjamminjim:UIControl-Support

Commits on May 18, 2017

Rename state property to viewState.
Jim Boyd
committed
Example UITextField implementation of PinCodeDigitView
Jim Boyd
committed
Update project to demonstrate PinCodeDigitField
Jim Boyd
committed

Commits on Oct 13, 2017

Swift 4 migration / Xcode 9
Jim Boyd
committed
Merge branch 'master' into UIControl-Support
Jim Boyd
committed