Added support for compressed PFS images https://github.com/PSBrew/MkPFS (read speed 150-250 Mb/s).
Thanks to @PSBreew for his great work!
python -m mkpfs pack folder c:\game_folder d:\game.ffpfs `
--compress `
--skip-executable-compression `
--compression-level 9 `
--max-compressed-ratio 95 `
--min-compress-size 65536 `
--version PS5
Full Changelog: 1.6test13...1.6beta14