This commit removes the (potentially confusing) pre/post equation
notation from SuffixTrie.java.

HuffmanCompressor.Node's compareTo method was using a method of
comparison that failed in certain cases. This update adds a more
complex, sophisticated comparison check.

Update Javadoc from addWork() to add() for FIFOWorkList and LIFOWorkList

Update Javadoc from addWork() to add()
+ Update FIFOWorkList in cse332.interfaces.worklists
+ Update LIFOWorkList in cse332.interfaces.worklists


See merge request !1