Issue 43: Consider adding many -> many collection creation
Status:  Accepted
Owner:
Reported by ore...@drjays.com, Dec 28, 2009
I think it would be useful to be able to make a chain such as this:

my $dsitems = $oship->order->items->dropship_items;

... where "items" is a collection and "dropship_items" is another
collection. The result should be all the dropship items that are referenced
by the items collection.