1.3.5
       
    - refactor assigning endpoint styles into a common helper method    DONE    
    - oncontextmenu event bind  DONE
    
1.3.6

    - single SVG element/single VML group/single Canvas per page?
    - qunit: add helper methods to simulate mousedown and drag.  then write some functional tests.
    - draggable by parent issue from google code
    - image overlay?
    - importDefaults({ some defaults })  method on jsPlumb (like a bulk import)
    - make AnchorManager the source of knowledge about connections (remove connections by scope etc)