Built-in Support for Months and Quarters

Explain the problem as you see it

Only day, week and year are built in to Tana.

Why is this a problem for you?

I also do monthly and quarterly reviews. I would add my own tags for this but they aren't easily integrated with the current date implementation.

Suggest a solution

Add built-in tags for #month and #quarter. Nest #week under #month, #month under #quarter and #quarter under #year.

Or even better, allow users to choose which they would like to use.