Leather Bundles

Port to 1.21!

This was simultaneously easier and harder than expected- easier because I had just ported Spineless, which took ages and was insanely weird cos of a ton of stuff Mojang changed in 1.21, but harder because SOMETHING WASN'T WORKING.

It is now, but I still don't know what it was.

I completely rewrote the mod with my own code, rather than a simple MCreator project- this gives me complete control over licensing and crediting, allowing me to keep all my mods in the public domain! I've also updated to 1.20.4! TLDR: -Updated to 1.20.4 -Complete rewrite in my own code, not MCreator

Updated the mod with a logo, accurate credits and a description!

Added the leather bundle :D