Point2D: a class for 2D points
Point3DPickedEvent: couple the chosen Symmetry and the picked point, like discussed earlier
Point4DPickedEvent: couple the chosen Symmetry and the picked point, like discussed earlier
JRealityUtility: added asPoint2D and asPoint3D methods for Point <=> double[] conversion
CoordinateView: will fire a Point3DPickedEvent or Point4DPickedEvent with the last chosen symmetry
ExternalCalculationEventHub: support Point3D/4DPickedEvent; the other events seems to be obsolete and not well thought of
SchlegelView: handle schlegel result and render it
Merge branch 'Workflow'