Upstream has released updates that appear to apply and compile correctly
Paper Changes:
47d48790d Change return type of ItemStack#editMeta to allow checking for successful vs non-successful edits
7aabe7d56 [CI-SKIP] fix minecart vs minecraft typos (#5713)
f775e87b4 [CI-SKIP] ci: update setup-java action (#5710)
c58b3b277 ci: replace Java 11 with Java 16 in GH Actions build flow (#5709)
4b72327a6 ItemStack#editMeta
68984b664 Add Unix domain socket support (#5611)
68c67e680 Add Mob#lookAt API (#5633)
4bacecd16 [Auto] Updated Upstream (Bukkit/CraftBukkit)
1f28e6eeb Fix default ChatRenderer when no plugins are installed (#5702)
ecb0d32ca Enhance (Async)ChatEvent with per-viewer rendering API (#5684)
Airplane Changes:
636dbff0f [ci skip] Cleanup mcdev import files
c57932048 [ci skip] Remove icons
7ada9a476 [skip ci] Need to specify 1.16.5 in the README of course
813df1a44 Update README
daf3f0b29 Optimize air case for raytracing
