Count of nested task done

[mrvkino]

Could it be possible to have a count of nested task (or percent of completion). Such as it would update every time we finish/add/remove a task. The parent task could auto-complete if all the children are done or canceled.

I am not sure if the best could only the immediate children or all the sub-children.

Project:
☐ Script 0/1
    ☐ write script 2/4
      ✔ create new function
      ✔ add new class
      ☐ interface with command line
      ☐ test