added Resizable Array Stack ADT
added LinkedList implementation of a stack
added FIFOQueue
added bag ADT
added int to binary converter
added josephus solution. added sedgewicks linkedqueue adt
unionfind with quick find
added: weighted quick union with and without compression. added
sedgewick's stopwatch api
added SortTemplate for sort algorithms
added some testData (for sortingalgos)
debugged sorttemplate
added portable selection sort. modified template to serve as an abstract
class for sort algo classes
renamed to SelectionSort
added insertion sort
added sort compare - fully copied from sedgewick
added shellsort