5.0.0

1.21 server support!

See https://docs.papermc.io/misc/java-install on how to update your Java version
Even Minecraft 1.8 is mostly able to run on Java 17, although for a better experience you should use a fork that fixes smaller issues
Some older versions require the Paper.IgnoreJavaVersion system property to be set (-DPaper.IgnoreJavaVersion=true as a startup flag), but run perfectly fine using Java 17
If all else fails, use the Java 8 compatibility builds we provide at risk of not receiving support for issues it could cause - you should not make yourself depend on these too much, they will generally only be updated on releases

Added new config option to suppress emulation warnings (by EnZaXD)
Fixed horse inventories in 1.20.5->1.20.3
Fixed llama carpet/horse armor display in 1.20.5->1.20.3 (by EnZaXD)
Slightly improved item comparison in 1.20.5->1.20.3 by removing empty tags
Fixed sniffer entity data errors in 1.19.4->1.19.3
Fixed UPDATE_LISTED player profile update in 1.19.3->1.19.1 (by EnZaXD)
Emulate recovery compass using lodestone compass in 1.19->1.18.2 (by EnZaXD)
Fixup respawning throwing errors sometimes in 1.19->1.18.2 (by EnZaXD)
Fixed display of player heads without ids in 1.20.2->1.20 (by Pantera07)
Added missing handling of inlined block states in block state particles (by EnZaXD)
Added missing translations in legacy protocols (by EnZaXD)
Fixed client side damage on cancelled block placement in 1.11->1.10
Small fixes to edge case in data parsing in various versions (by EnZaXD)

If you want to get larger version updates early, consider supporting me via https://viaversion.com/donate. See the previous update notes for more info.