Hi,

I have submitted to squeakmap new package: BidirectionalLinkedList. It is what it says. Its implementation enables you to effectively add and remove elements to/from the collection. It might be useful in those cases when LinkedList would be usable. Details are here:

http://altair.dcs.elf.stuba.sk/wiki/Kosik/BidirectionalLinkedList

Does not collide with anything else. Test-case (BidirectionalLinkedListTest) is included.

Regards.
-- 
mk