Feature Request: Subtasks for the Kanban Board

[MartinElsaesser]

You already had a great idea: add checkboxes to the items on a kanban board. I think they can be used better. In the following Issue I want to outline how.

What I propose is to use the checkboxes to organize subtasks. Instead of having a checkbox be there whenever you create a task, only show one, when the corresponding markdown for a checkbox is entered. This can then be used to manage subtasks within a main task.

The following pictures were created in gimp and aim to visualize my idea further:

Both subtasks unfinished

First subtask finished

How I imagine the code looking for the image example above, where the first task is finished and the second one is not.

The images show a main task Tech bloggers and two sub task. When one of the subtask is finished, it can be ticked off. When the main task is finished it will be dragged to the finished section.

In my opinion, using checkboxes like this adds greater value to them. There is already a common way for marking a task as done: dragging it into a done swimlane. So freeing the checkboxes to manage subtasks is a great way to give users an easy tool to break down complex tasks into smaller ones.

P.S.: I am posting this issue, because I like your app and want it to be even better.