Generic C++20 library.
jsoncpp is used for JSON support: https://github.com/open-source-parsers/jsoncpp
SDL2 is the version of SDL supported by src/sdl
Any utility code I write that I use in more than one project is likely to end up in this library.
What I use the most from this library is #included in
examples/example_misc_includes/misc_includes.hpp
mainly for my own convenience so I don't have to re-type its contents.