A wide collection of functions which extend the Wolfram Language.
Install with the following command (replace 0.0.0 with the latest version digits):
Alternatively you can install the latest version with:
Needs["MPM`"] MPMInstall[ "arnoudbuzing", "Prototypes", "AllowPrereleases" -> True ]
A prerequisite for this method is the installation of this utility: https://github.com/kubaPod/MPM