Totally reworked whole project.
Added compatibility for Minecraft 1.21.
Added wiki for both server admins and developers.
Added several modules and submodules with proper documentation.
Added several automatic Github actions.
Renamed artifacts with lowercase names: now it will be accessible as it.fulminazzo:yagl.
Renamed packages to it.fulminazzo.
Reworked README.md.
Updated JBukkit library.