> Notebooks as we know them today have many pain points (versioning, reproducibility, collaboration)

Absolutely. We're solving a small part of this by making notebooks play nicely with GitHub (https://reviewnb.com). Code reviews & collaboration for Jupyter Notebooks, essentially.

Happy to see more products taking a stab at this problem. I'd be curious to know how you implement version control (git or something else) & what kind of experiences does that translate to for the user. Congrats on the launch!