* make 'layoutConstraints' public again (#382)
* Fix wrong function call within contentCompressionResistanceHorizontalPriority (#387)
* Missing property topMargin on ConstraintMakerExtendable (#393)
This pull request adds the missing property "topMargin" to ConstraintMakerExtendable class.
* Switched main target build settings' "skip install" default settings to YES. (#391)
* Add an isActive API to Constraint
* Priority enum (#345)
* Adds ConstraintPriority enum to ConstraintMakerPrioritizable
* Constraints priority is now more robust
* Adds priority enum function
* Fixes compile error
* Adds failable initializer. Custom macOS medium priority. Adds back deleted methods
* Updates depracation messages
* Improve Priority API's
* Add extra protocol conformances to ConstraintPriority
* Tweak priority API's for offseting
* Tweak priority API's some more and add tests
* Prepare for release