Rated 4 out of 5 stars

Please, add a prompting to restart manually after a memory limit was exceed.
Now we have 2 options: the automatic restart (which is absolutely unexpected and bring to data loss and other problems), and, secondly: no restart at all (as the result: a user miss the moment when he should restart a browser, after that firefox can't properly save a session of tabs because no memory, or it even crashes).

So, we need some informing message when the memory limit will be exceed. And, as an option, propmt user to restart manually.

This review is for a previous version of the add-on (1.9.1-signed.1-signed).