Does what it claims, and does it pretty well.

I wanted to add some functionality to regex support. Is the project hosted on github / gitlab / bitbucket so I could send PRs?

Please add it as extension homepage.

[Idea] There should be an extension to add strings to tabs name in order to create groups of tabs that this extension could then hide/show! (If anyone ever thinks of doing this please remember that firefox allows to select tabs with CTRL, which is a really nice way to get the task done.)

[Review] Thought that the command style wasn't for me, but actually is really practical.