Miscellaneous lua libraries that I use in my own World of Warcraft addons.
Go to your addon's file directory and execute this from the command line:
git submodule add https://github.com/ScottIngram/ScottFreeWowLibs
then in your addon.toc file add this line
ScottFreeWowLibs\index.xml
https://git-scm.com/book/en/v2/Git-Tools-Submodules for more details. https://github.com/ScottIngram/UFO for an example of how I'm using it.