Is there any support for .ipynb (Jupyter) files?

[Bruncky]

The quote below from an old issue summarizes it:

When I handle a .py file everything is working great out-of-the-box, but none of the expected features appear when I'm handling a .ipynb file.

Is this a bug or is there anything extra that's needed to activate Git Lens in Jupyter?

Originally posted by @Zoxjib in #1821