Updated quadtreelabeler.
Updated renderquadtreepoints to generate quads that contain nodes instead of just nodes so that it matches what quadtreemap produces.
Updated renderQuadtreePoints to work with quad objects that have sourceNode properties instead of directly working with nodes so that it uses the same structure as the quadmap.
Version bump.
Fixed problem with quadtreemap-pointSelected event being sent with the node instead of the quad object.
Added ways to add and render points to quadtreemap and points renderer after initial creation.