the WebExtensions version (3.0) was available for a short time but it caused issues in terms of not being able to revert back, so I removed it until I decide what to do at this point.
Here's a screenshot of the whole process log:
I have uploaded the entire 3.0 source for you, if you would like to try it out:
In short, the whole process of migration to WebExtensions was kind of painful, and it's mostly because of AMO.
I have not yet decided what to do, so it's stagnating at this point. I am leaning towards starting a new extension for the WebExtensions branch, feel free to suggest something better.
As for the support, this project is a hobby project and I do not provide any support outside of reviews on this page, and as you see, it works.
Thanks for input.