**BREAK UPDATE** FileSHA256Group::new() -> FileSHA256Group::from() new FileSHA256Group::new() new a null group add FileSHA256Group::append() mv FileLists::un_mask()
**BREAK UPDATE** FileSHA256Group::new() -> FileSHA256Group::from() new FileSHA256Group::new() new a null group add FileSHA256Group::append() mv FileLists::un_mask()