Works well, can not live without this feature.
I have a small issue where I have to enter the add-on options and save sometimes when restarting the browser before it takes effect.
Not sure if it's just something on my end or what might be causing it.

Thank you for your work.

Edit
After installing the latest nightly version and trying it there the problem doesn't seem to manifest anymore so I guess that's good enough for me. Changing from 4 to 5 stars since that annoyance is no longer an issue