Swift 5

This update makes the following non-breaking changes:

• setting(keyPath:to:) now accepts an @autoclosure to set the value
• Swift 5 access-level permissions have been squashed.

Initial Release

This release adds support for the following:

• Configure your objects using Transformable and SingleValueSettable (or both with Configurable)
• Get some naive (but simple) shorthands for adding time
• Use throwing convenience functions to interface with optionals
• Initialize URLs with hard-coded StaticStrings
• Use key paths to interface with high-order functions like map and sorted