Web Extentions Support !!

[yudhir]

Legacy addons will be removed from 57

[RandomEngy]

I'm aware of this but don't have time to rebuild it. Unless there's another contributor to come along and convert it, it won't be compatible.

[dromer]

This is one of my favorite plugins in FF, hope someone will take on this port.

Relevant documentation: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Porting_a_legacy_Firefox_add-on