Issue 27: add create() as alternative to insert()
Reported by funnyso...@gmail.com, Jul 2, 2009
insert() returns an obj_id.

if you have a resultset in a hashref_single or _multi form, and new entries
are being created incrementally, one has to get(obj_id) after insert().

create() would return an obj that could be immediately registered in the
hashref lookup as if it had been returned from the original query.