2009-09-24 Jens Alfke Initial Cocoa (Objective-C) API.
2009-09-24 Jens Alfke Oops, forgot to set _previousTrailerPosition, which made the previousVersion() accessor not work. Fixed. Also added some sanity-checking of its value.
2009-09-24 Jens Alfke * Fixed a bug in Ottoman: the parameterless constructor didn't initialize _file, leaving it garbage and leading to a crash if you deleted the object without saving.