Migrate to a WebExtension

[mgol]

Firefox will not support old-style XUL-based extensions starting November 2017 (in Firefox 57+). Do you have plans to migrate to a new WebExtension standard?

[janodvarko]

Yes, but there is more existing extension that need migration too so, this one might take a time (plus I suspect that some new WebExtension API for DevTools will be required for this extension).

Honza