- display computing time for each problem

- add ChangeListeners to JTextField

- fix BoxLayout in Parameter Panel

- display history of Path computations

- add file and mouse input for problems

- add JSpinner for some parameter fields

- add histrory / pop down for server field

- add manipulation of machine file in GUI

- add Apache Commons Net Rexec to launch deamons on cluster

- add TSP heuristic to get better initial solutions

- add help (at least some)

- show / print / save Point coordinates

- collect output streams from daemons