This implements the Zstd compression algorithm, using the namespaced algorithm id 127 that Mojang provides in 1.20.5. It includes a pre-seeded dictionary, trained using a combination of a fresh world and five publicly available Hermitcraft maps.
patches/server/8001-Backport-1.20.5-compression-to-1.20.4.patch includes an implementation of the lz4 algorithm that will be available in 1.20.5.
Current PaperMC commit hash: c5d168cef92148a6799141832fdb5f95732c1a38 (1.20.4-409)
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