Features
Adds a Markers link to performer pages.
Screenshots

Does this still work for anyone? I have installed the plugin but I donβt see any Markers tab in the Performer view.
It does.
Make sure you have the dependancy installed and if you still have non-forked version you will need to uninstall it as it might interfere.

Right, I uninstalled non-fork Userscript Library and now it works. Very cool plugin!
Is it possible to add a markers tab to Studios?
There should be a markers tab for everything. Scenes as well, so you filter for whatever scenes and can see all the markers from those scenes.
I agree 100% 
One more thing on dependencies for the plugin: Another pitfall here is the reverse proxy must be configured properly. Mine is probably missing the API access bits or this may not work at all if it is served with a subdirectory on the virtual host.
Marker filters only support performers/tags at the moment. Once more filters gets support I can look into adding them.
Added support for tags.
Since the plugin was renamed and will need to be installed as new Iβm deprecating this and posting a new topic.