Added useWindowBreakpoints hook

This version contains minor semantic updates plus a useWindowBreakpoints hook.

This hook is handy when you want to conditionally render components or have dynamic constraints based on window size.

See the changelog in the README for the full list of updates in this release

Fixed critical error causing build to fail

Deployed initial version and fixed critical issue that caused ConstraintGuide to be classified as ConstrainedView; thus causing the build to fail.