Revised X3Polygon.Triangulate() algorithm.
Implemented overloaded X3Polygon.CalculateNormal() As X3Vector method.
Added X3Polygon.Get2DProjection() method.
Changed Get2DProjection signature to Get2DProjectionCoords.
Partially implemented polygon triangulation.
Renamed Get2DProjectionCoords to GetXYProjectionCoords, and partially implemented method.