Speed and memory optimizations:
1) Added picture thumbnail generation; thumbnails are added to the document and are used everywhere instead of big images got from camera which take about 20MB in memory;
2) Disabled undo for the document as it is not supported now
Added upside-down interface orientation for iPhone
Fixed and commented out logging of managed objects life cycle
Changed internal format of images saved in a model from png to jpeg
Added an example of faulting unneeded images which is not working currently because of a bug in CoreData
Optimized document opening process by adding a RootAssemblyReference entity into a model. Now we need to fetch for only one entity on opening of a document which gives us a root assembly reference.
Removed copyright form headers of source files (it looks strange in open source project :))