OpenSSL and SCrypt now install their headers where project builds can see them.
PearlAttributeString

[ADDED]     Convenience macro for making attributed strings.
PEARL_MAIN_THREAD_START/END and main thread checks.

[ADDED]     PEARL_MAIN_THREAD_START/END define schedules the section on the main thread if not yet on the main thread.
Work-around for iOS bug in MFMailComposerViewController.

[FIXED]     An iOS bug causes the MFMailComposeViewController to crash when the nav bar's font has been changed.