Cotton config, Cotton logging, and Jankson-Fabric all by Cotton team licensed under MIT license which can be found at https://github.com/CottonMC/Cotton
XZ for Java by Tukaani released as public domain. https://tukaani.org/xz/java.html
Parallel zip compression: https://stackoverflow.com/questions/54624695/how-to-implement-parallel-zip-creation-with-scatterzipoutputstream-with-zip64-su