Upstream has released updates that appears to apply and compile correctly
Paper Changes:
55e2de5c6 Improve per player mob spawning (#3971)
42433c262 Updated Upstream (Bukkit/CraftBukkit) (#3980)
e5ede546a Fix IDE Debug JVM Flag for 1.16 (#3983)
2712c6888 [Auto] Updated Upstream (Bukkit/CraftBukkit)
0901ffd04 Use title packet for actionbar methods (#3959)
2e11235d1 Expand MaterialTags (#3964)
cc25ae47c Amend last commit to fix decompile error forgot to commit
f503db37c Fix AdvancementDataPlayer leak due from quitting early in login
282763b88 Fix SPIGOT-5885 Unable to disable advancements
9b93d122e Fix SPIGOT-5824 Bukkit world-container is not used
bede4d304 Load config files early on
Tuinity Changes:
b0673b3 Merge dev/optimise-notify into ver/1.16
d3dc35c Name craft scheduler threads according to the plugin using them
Upstream has released updates that appears to apply and compile correctly
Paper Changes:
fcbeac8a [CI-SKIP] Readme update (#3702)
824f8086 Bandaid italic legacy serialization #3757 (#3760)
Tuinity Changes:
9f21359: Re-add optimise collision checking in player move packet handling
1152054: Revert player move packet optimisation
ef0a6c4: Optimise collision checking in player move packets