Feature request: multiple tasks and notes lists (I can work on it)

[thetiby]

Hello,

I really appreciate your work as I use your extension daily.

What I think would be really useful as well is to be able to use multiple categories for both notes and tasks. I don't have a particular design in mind, but I can propose a simple one that extends the current one.

I can help with (or fully develop) this feature.

Thank you!