This fork came into existence partially due to my frustration with overly aggressive tagging as outline here.

I forked 2.0 because later versions were bootstrapped or had features that I did not use. I added a working Skip Domains setting (which I couldn't get to work using the original extension). I also either removed or altered the code that was triggering the "FUEL is deprecated" warning (I've been working on this for so long I forget which).
I've also added some new features such as:
- site-specific, trusted, and untrusted domain settings
- a cleaning delay (to help with frames and embedded items)
- link attribute mutation and http-on-modify-request observers
- full cleaned link logging capabilities
- ability to enable a tooltip when hovering over cleaned links
- ability to disable cleaned link dotted-underline decoration if desired
- ability to highlight cleaned links and customize if desired
- a settings reset button
I hope someone out there has enjoyed using Clean Links in the past as much as I have and finds this fork useful. I would be remiss to not thank the original developer for providing Clean Links and all their other wonderful extensions.
For the help vampires, please don't start opening Issues requesting that I back-port any features from later versions of Clean Links. I don't plan to spend much more time on this extension, unless there is something glaringly wrong that I overlooked or totally bungled. I'm just another end-user of Pale Moon like you are, not a developer, and certainly not sharing this to put myself in service to your every need.