Added method in Element to reset current pointer to root
Added method in Element and others to get the current level's next element's key
Added method in Element to advance to bottom level
Added method in Element and sub-helpers to add a new Element by using an array of elements its LinkedList should point to. To be used in Update. Needs to be tested
Working on debugging insertion
Insert was working, but then I realized I was only inserting levels 1 and above and I need level 0s. Deciding on what the convention should be. Probably a minimum of 1