Per #29 (from which this branches), this makes _iterfrom and _iter_dupfrom behave consistently when seeking to a key that may or may not exist and may or may not be greater than any key in the store, which is more usable for callers whose behavior doesn't depend on the presence of the given key (nor any greater ones).
Per #29 (from which this branches), this makes _iterfrom and _iter_dupfrom behave consistently when seeking to a key that may or may not exist and may or may not be greater than any key in the store, which is more usable for callers whose behavior doesn't depend on the presence of the given key (nor any greater ones).