Add ifndef guard around DEBUG
Move NIPageView back into its own file to facilitate its removal and allow clients to avoid pulling in dead code.
Facilitate an easy transition from NIPageView to NIPagingScrollViewPage.
Restore NSString+NimbusCore with calls to NIFoundationMethods
Add debug warnings to get people to remove NSString+NimbusCore
Promote visible pages from the subclassing header to the main header to ease migration.
Restore the pagingScrollView method and add runtime deprecation.