Unlimited Redactle, as a jupyter book
You really should pay play the real https://www.redactle.com/# by John Turner, it's much slicker and nicer! But I've been wanting to polish up my interactive jupyter book skills, and the SO wanted unlimited redactle, so this crummy copy emerged.
This project is created using the excellent open source Jupyter Book project and the executablebooks/cookiecutter-jupyter-book template.