Almost perfect Rated 4 out of 5 stars

Excellent! This is exactly what I was looking for!

I give 5 stars when it remembers the most recent tabs even when we close one in the middle (yes, it forces you to store in memory the order of the few last focused tabs, but that should be quite easy :) ).

I'm just giving an example in case I'm not clear:
- Focus tab 1
- Focus tab 2 (I can alternate between 2 and 1)
- Focus tab 3 (now, I can alternate between 3 and 2)
- Close tab 3
- I want to alternate between 2 and 1

What do you think?

This review is for a previous version of the add-on (0.3.1-signed.1-signed).