Updated Plans.txt
Created utility methods in LayeredLinkedList

Reformatted LayeredLinkedList
Created First,Last,Count,FirstAfter,LastBefore in LayeredLinkedList
Creating more sophisticated BulletEmitters. Old BulletEmitters are now
BulletPatterns.
It is finally almost kind of a game

Need to create BulletPattern change events so that player firing can be
connected to a key.
Updated Plans.txt