This project uses: 1. 30log: https://github.com/Yonaba/30log
Copyright 2019-2023 Zolithen Licensed under the MIT license https://opensource.org/licenses/MIT
Stunenca (Simple Tool Usable for Numerous Extensible Node Composited Applications) (yes, that long of a name for something simple) is a one file library that provides a simple scene graph written in pure Lua. You can find a simple example in main.lua, and you can look at tree.lua to find rudimentary documentation about every function it provides. WIP, has not been battle-tested that much yet.
You can find other libraries that use this in my Github profile (currently none).