As you noticed, I archived quantum nox repository.
The reason for this is that I no longer have the motivation to keep mantaining it. I started working on the repository to create a full dark theme for Firefox back on FF57 when I was still a student due to webextensions being very limited at the time and not allowing to change much of the interface. Firefox was more engaging for me back then, and creating mods was fun and interesting.
Times have changed and now Firefox has quite more complete themes that can theme almost every part of it, as well as a default dark theme that is quite comprensive. Apart from that, now that I have a job, I don't have enough motivation to keep mantaining the dark theme and the other features, since the engagement I used to get from Firefox is now gone due to not having as much time, and not wanting to dedicate yet more time to coding than what my job needs me to.
The mods work most of the time on each update, but once in a while they break and then I have to spend a few days of free time fixing them.
I kept the repository up this long thanks to the donations of people back when they were still up, and due to still having time when I still didn't have a job, but now that I've had one for a while and not getting much more engagement from coding mods for Firefox, my motivation to work on this has dwindled.
As a last gift, I uploaded a mod manager that should keep css or js scripts updated on your firefox, checking for updates on each firefox restart. Apart from that, the mod manager is still pretty much a beta, and will probably have some problems that will need fixing, but I hope that it can at least be useful for anyone who is willing to fork it and work on it.
Lastly, thanks to everyone who supported the project this long, and special thanks to those that donated, who motivated me these years to keep it up until now.
Just tested Tab-Mix-Plus on another machine. It works, along with dragging tabs and re-arranging just like with Izheil's.
Install latest userChromeJS. Do parts 1 and 3. (Note: Download Scripts and Extensions):
https://github.com/xiaoxiaoflood/firefox-scripts/#readme
Install latest: https://github.com/onemen/TabMixPlus/releases
It works for my Windows installation. Note if you don't install the Scripts and Extensions (I installed just Scripts first), you will get an error about the addon being corrupt.
I have not tested Izheil's new update yet. Hopefully tomorrow when I'm done working.