- Maintanence taken over by Thomas Ballinger (also the original author while at Observable)
- Repo moved to https://github.com/thomasballinger/observable-jupyter
- Lots of tooling changes: yarn -> npm, GitHub CI, JS build invoked by Python build
- Updated @observablehq/runtime from 4.7.0 to 4.17.2
- Better error message when a url is accidentally passed to embed