Add subtasks

[baimafeima]

It would be great to have a clean option to list subtasks below a task and have the main task automatically closed once the last subclass is finished.

[lainsce]

I'll see if the Todo.txt spec has subtasks, for compatibilty first.

[baimafeima]

Thanks a lot for looking into this. On a side note, would you be interested in reviving this little programme? https://github.com/baimafeima/Zhuli/releases
I like your aesthetic choices but I am not a programmer myself. I've also requested it to be added to the elementary-apps-list: quassy/elementary-apps#75

[lainsce]

I don't "revive" apps? Maybe post on the Google Plus elementary OS community to see if anyone's interested in that app becoming reality?
Also, it seems the todo.txt specification doesn't support subtasks, so, sadly I can't add this without breaking compatibility..

[baimafeima]

I don't "revive" apps? Maybe post on the Google Plus elementary OS community to see if anyone's interested in that app becoming reality?

I'm not on Google Plus but I wonder if you'd be interested. I'm also willing to sponsor such a project.