nbdime provides tools for diffing and merging of Jupyter Notebooks.
Beside console based diffing and merging tools, web-based diffing
and merging tools are provided (requiring npm).
The ebuild is based on the live ebuild in the science overlay,
https://github.com/gentoo-science/sci, which was added by me to
the overlay.
Gentoo-Bug: https://bugs.gentoo.org/604372
Package-Manager: portage-2.3.0
Closes: https://github.com/gentoo/gentoo/pull/3301