0.3.2

• Support 'cancel' query String to prevent dragging: A 'cancel' query String
  may be supplied for draggables to prevent starting a drag on specific elements.
• Improve clearing of selection when drag starts.
• Fix some bugs in touch support.
• Firing sortUpdate events after dragEnd events: Firing sortUpdate at the end
  makes sure that the listener of update events can uninstall/install involved
  draggables without side-effects
• Add some additional test examples.