Adding a very budget selection handling mechanism for nodes and elements.  Uses a wireframe cube glyph to draw a rubber band box for selection which is a bad workaround for a proper selection glyph.
Adding scene beginChange and endChange around the update of the rubber band selection box to stop the jitter.
Adding in selection into default zinc widget.
Adding some documentation to the undocumented methods.  Indicating that the SelectionMode class is private by adding a leading underscore.
Merge pull request #2 from hsorby/master

Nice.
Approved.
Merged.
Closed.