Issue 51: resultset hashmaps
Reported by funnyso...@gmail.com, May 27, 2010
Be nice to have a convenience wrapper for:

my $items = $dbrh->items->where( %where );
my @maps = ();
while (my $item = $items->next) {
  push @maps, $item->hashmap( 'item_id order quantity status.name' );
}
return \@maps;

so that one could simply:

return $dbrh->items->where( %where )->hashmaps( 'item_id order quantity 
status.name' );