The function in SkyProviderDataSource protocol for SkyProvider is changed.
From
-(NSString*)skyProvider:(SkyProvider*)sp keyForEncryptedData:(NSString*)uuidForContent contentName:(NSString*)contentName;

To
–(NSString*)skyProvider:(SkyProvider*)sp keyForEncryptedData:(NSString*)uuidForContent contentName:(NSString*)contentName uuidForEpub:(NSString*)uuidForEpub;

Fixed Layout
ItemRef which has “LinearNO” in Spine will not be skipped to improve the compatibility with iBooks.
Fixes the Bug that Fixed Layout viewer sometimes crashes in landscape mode & curl animation.