希望能像valine那樣樓中樓顯示

[jerryc127]

中文用户请注意：请尽量用英文描述你的 issue，这样能够让尽可能多的人帮到你。

If you want to report a bug, please provide the following information:

• The steps to reproduce.
• A minimal demo of the problem via https://jsfiddle.net or http://codepen.io/pen if possible.
• Which versions of Valine, and which browser / OS are affected by this issue?

希望能像valine那樣樓中樓顯示回復

[DesertsP]

已经支持嵌套评论。
新增可选参数maxNest控制最大嵌套深度（默认3层嵌套）