v2.16.0

• [Added] ext-clones: new method node.setRefKey(refKey)
• [Added] modifier class .fancytree-fade-expander to be set on container
• [Added] ext-dnd: .dragExpand() callback to prevent auto-expand
• [Improved] load error reporting
• [Improved] bootstrap theme icons and style (samples use bootstrap 3.3)
• [Improved] status nodes don't have icons
• [Improved] pass data argument to source callback
• [Improved] Handle exceptions inside postProcess
• [Improved] #568 ext-dnd: Auto-expanding of collapsed nodes should also work
  when dropping is not allowed
• [Improved] #567 ext-dnd: fix revert position
• [Improved] #565 ext-dnd: fix intermediate display of wrong icon (sending 'over' after 'enter')
• [Fixed] #569 node.navigate does not return a Promise object
• [Fixed] #563 tree.reactivate(false) sets fancytree-treefocus and tree.reactivate(true)
  doesn't set keyboard focus
• [Fixed] #562 Node span tag leaks outside table cell
• [Fixed] #526 tree.setFocus() does not set keyboard focus
• Updated to jQuery 1.12.1
• Updated grunt devDependencies
• Add jQuery 3.0 beta to test suite
• Added LICENSE.txt to dist
• Commit details.