Option to apply centre of mass added.
Locate: findCentre method added to filter between weighted and unweighted.
Added brief labels
KNNTrial3: added to trail unweighted centre.
Minor changes to tests.
KNNTrial4: added to test weighted style.
Changes due to different locate styles.
Changes due to different locate styles.
RoomInfo: re-added createUnknownGlobalLocation.
Positioning: changes to locate style.
LocateTest: fixed for changes to Locate.
ResultPoint: added equals method.