Just did a quick update to the add on, mainly to be able to quickly enable it and disable it, just clicking an icon in the URL bar.
https://addons.mozilla.org/en-US/firefox/addon/reddit-to-wayback-machine/
Also open sourced it
https://github.com/pe1uca/reddit_wbm/releases/tag/v2.0.0
I don’t know how to do that.
I’ll be using Firefox nightly to be able to install it.