Cheers, that very nice to hear

    > And the UI for adding exceptions is still really 
    > cumbersome -- as a developer I wish there was some 
    > way to whitelist domains from the notification bar 
    > without going into settings.

That was implemented last week :) https://bugzilla.mozilla.org/show_bug.cgi?id=1517526 you should see it in nightly, and will be part of the release.