Document Revision History
This table describes the changes to Core Foundation Design Concepts.
Noted that installing custom callbacks results in undefined behavior for toll-free bridged objects accessed from Objective-C.
Updated Toll-Free Bridged Types to discuss object lifetimes with ARC.
Minor update to artwork.
Updated to remove obsolete references.
Included a link to the memory management article from the "Object References" and "Naming Conventions" sections.
Correction of minor typographical error.
Converted existing Core Foundation documentation into topic format. Added revision history.