v2.9.0

• [Changed] ext-filter: tree.filterNodes(filter, opts) now accept an opts
  object instead of leavesOnly
• [Improved] #417 only raise exception about data being a string if dataType is "json"
• [Added] #394 New option autoExpand for [ext-filter]
• [Fixed] #402, #405 rare exception in dnd events
• [Fixed] #420 nodeSetActive not returning promise
• [Fixed] #270 Keyboard focus not working when using dnd extension
• All commits