DUNE/Plans: Add empty durations when skipping waypoints.
DUNE/Plans: curr should never be larger or equal to duration.size().
DUNE/Maneuvers: In MementoTable, fixed the use of a map to address tuples. No longer using inheritance in this class.
DUNE/Maneuvers: Removed debug prints.
Maneuver/Multiplexer: Saving last waypoint in memento.
DUNE/Maneuvers: Removed debug print in MementoTable.