Rated 4 out of 5 stars

Everything is excellent. Indication of download it is this what I wanted. Still want to hide icon when the list is empty. But overall I'm happy.

Bug: when you press the "clear list" or when you manually delete items from a list, the extension continues to display items in a list, although the list is empty.

Rated 4 out of 5 stars

Can you add a progress-meter into the button?
Like it has Status-4-Evar

This review is for a previous version of the add-on (1.2.1-signed.1-signed). 

I was thinking something like that. I'll try to do it