Feature: Notification for accounts mentioned in comment

[janreppien]

It would be nice if accounts mentioned with @account_name in comments would get a notification and/or an e-mail.

Background: We often edited large documents with many people, and some sections need to be checked by at least two of them. Currently, we have to scroll (or search with the browsers search function) through the comments and check if our account name is mentioned somewhere.

As always, I love your product. The ability to edit documents concurrently is absolutely amazing!

[areknawo]

@ mentions are on my to-do list, but I need to add a proper notification system first.