This code could get hit by many threads at once, causing multiple
chunk loads to convert legacy data, leading to all sorts of fun.
Additionally, go ahead and preload it async on world load.
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing
Developers!: You will need to clean up your work/Minecraft/1.13.2 folder
for this
Also, restore a patch that was dropped in the last upstream
Bukkit Changes:
279eeab3 Fix command description not being set
96e2bb18 Remove debug print from SyntheticEventTest
CraftBukkit Changes:
d3ed1516 Fix dangerously threaded beacons
217a293d Don't relocate joptsimple to allow --help to work.
1be05a21 Prepare for imminent Java 12 release
a49270b2 Mappings Update
5259d80c SPIGOT-4669: Fix PlayerTeleportEvent coordinates for relative teleports
Spigot Changes:
e6eb36f2 Rebuild patches
