Rated 5 out of 5 stars

As Mozilla makes FF more unfriendly to power users with each release, I worried that keyconfig would stop working. Thank you for saving us!

For anyone interested, here is a list of crazy cool shortcuts that work in keyconfig:
http://www.rexegg.com/regex-firefox-shortcuts.html

This review is for a previous version of the add-on (2016.2).