Developer reply by Realraven (Axel Grude)
Rated 5 out of 5 stars
Great addon!
But, pls, update for TB 60.2.1.
Ok, I will publish the new versions soon - already have a new version here:
https://www.mozdev.org/bugs/show_bug.cgi?id=26582
or hit me up directly through http://quickfilters.mozdev.org/index.html directly (mail link at the bottom)
To create your own collections, you must have a Mozilla Add-ons account.