server/new_view_sequencer.js
function(id, lastEditId, endEditId, isHistorical, readyCb){
			getSnapshotInner(id, lastEditId, endEditId, readyCb)
		}
function(id, lastEditId, endEditId, isHistorical, readyCb){
			getSnapshotInner(id, lastEditId, endEditId, readyCb)
		}
/*
- entire state of up endEditId of objects added during the snapshot edit range
- changes between lastEditId and endEditId for objects already present before lastEditId