* fixed issue: showNodeFocus should operate the A dom;

  * Update demo 'super/keyboard_navigation.html' Thanks @bseddon
  * Update demo 'core/searchNodes.html' Thanks @bseddon
  * add setting.view.nodeClasses Thanks @bseddon

   * merge PullRequest(Add TypeScript type definition)     Thanks @Itroads
   * fixed awesomeStyle    Thanks @Jermyk93

fixed issue: The return value of the function (data.nodeChecked & data.isHidden)  is set to a Boolean Thanks @xinhochen & @田biubiu & @FelixFly

fixed issue: The return value of the function (data.nodeChecked & data.isHidden)  is set to a Boolean

   * [修改] 部分 API 文字错误

* fixed issue: delete code 'eventMouseDown.preventDefault();' in exedit; Avoid affecting events outside of ztree
 Thanks @heyusysu

Support: node data is { name: "Node2", children: [ ] }, zTree will set this node is parent node (isParent = true)

   * [修改] reAsyncChildNodes 方法增加 callback 参数

 * 【修改】selectstart 事件未解绑导致的内存泄漏

fix issue: Performance problem in zTree init with 1k nodes  when you add exhide.js (Thanks:  https://github.com/sarxos)

fixed issue: if don't use 'exedit' package, the removeNode() method will can't trigger the 'beforeRemove' and 'onRemove' callback.

fixed issue:  if the count of drag nodes is more than maxShowNodeNum, will change some node's  selected state.

fixed issue: The setting's data is wrong which in zTree's method.  Example: checkNode and updateNode...
这个 bug 会导致 设置为 radio 且 radioType=‘all’ 时，checkNode、updateNode方法出现异常