Feature request - Google Tasks on iOS

Hi Denis,

I use geetasks for a long time and this is the first time, that I write a feature request:

1) I think, you should support the notification-center. There is a threat, I know…

2) I love the Subtask-feature. Is there a way to add a function to collapse and unfold the main-tasks? This feature would help to overview a long list of tasks/subtasks.

By the way: I would pay for such new features!!!

Thanks for your great work and greets from Germany