Added toString, hashCode and equals in Clique. Changed constructor (now it takes a Set of nodes, not a Collection). Changed Graph's constructor (it only takes a nodes' collection now. Added a method addNeighbours adding more than one neighbour. Changed GraphReader so it now takes a name of input file from arguments (not hard-coded anymore). Changed CliqueFInder so it takes a DegeneracySorter as dependency. Changed CliqueFIndingApp so it takes input file name from arguments. Changed tests for DegeneracySorter (more readable). Added tests for CliqueFInder.