Change tray icon when a mention is received

[nteodosio]

The Problem

I find pop-up notifications distractive. I prefer less intrusive notifications.

The Solution

Change the tray icon upon received a non-muted message.

Alternatives

Write something unambiguous to stderr, so a user can filter to set up his own notification mechanism.

Additional context

Set the window's urgent hint.

Happens in the latest version

• Yes, this feature is still missing.