Upstream has released updates that appears to apply and compile correctly
Paper Changes:
f65f95ce3 Do not let the server load chunks from newer versions
1799ef140 Apply 1.16's light optimizations to 1.15.2 too
5a28de666 Further optimize chunk light prioritization
4e364423e Fix deadlock issue with watchdog stopping
82e048ebc Remove ability to disable async chunks unless single core cpu
b317f0dc4 [1.15] Fix off by one error for scheduling block ticks (#4013)
51741a180 [1.15] Tighten logic for handling target tick times in tick scheduler (#4011)
5657364b4 Fix Light Prioritization Issues
013374629 Fix AdvancementDataPlayer leak due from quitting early in login
74231d422 [1.15] Move range check for block placing up (#3918)
48ea17fa1 Optimize the advancement data player iteration to be O(N) rather than O(N^2)
be4d74d93 Fix Explosion location - Fixes#3574
31e5f6688 [1.15] Optimize NetworkManager exception handling (#3820)
2248fffcd Clean up duplicated GameProfile Properties
49491f32d Fix Player Profile textures being duplicated - Fixes#3667
3fc989992 [1.15] Fix MobGoals#getAllGoals not actually returning all goals (#3671)
1d1c0561f Manually inline PooledBlockPosition#d(int, int, int)
5fc45f4db Revert recent changes around player skulls using user cache
Tuinity Changes:
5794d12 Fix up lock handling for UserCache
Upstream has released updates that appears to apply and compile correctly
Paper Changes:
70df8f27 Add PrepareGrindstoneEvent
24b2f54b Fix Player skulls for offline mode servers
ce270e14 Updated Upstream (Bukkit/CraftBukkit/Spigot)
c4ada0e1 Fix many chunk loading issues
37b244b5 Fix not running level updates for light if no pre/post task
e6142995 Add and implement PlayerRecipeBookClickEvent (#3351)
9bb4e930 Fix piston dupe patch creating ghost blocks (#3603)
Upstream has released updates that appears to apply and compile correctly
Paper Changes:
64666dc8 Improve Chunk Priority, Frustum Priority and Load Speed Algorithms
146b9908 Improve ChunkMapDistance.b crash fix to clean up properly
2c4499b7 Show Plugins Event Listeners under Combined Total in Timings
c5c909c9 Improve Plugin Ticket Management
b20529f3 Update to HTTPS in README (#3460)
de6dfedf Make Anti-Xray multithreaded (#3520)
531c4b3f Add PluginTickets to API Chunk Methods
b2d81e21 Improve Chunk Prioritization and Internal Scheduler
24a2e804 Improve Login to use Urgent priority - improves login chunk load times
Upstream has released updates that appears to apply and compile correctly
Paper Changes:
b75eeca0 Boost light task priority to ensure it doesnt hold up chunk loads
3d2bc848 Ensure VillagerTrades doesn't load async - fixes#3495
e470f1ef Add more information to Timing Reports
f4a47db6 Improve Thread Pool usage to allow single threads for single cpu servers
a4fe910f Fix sounds when using worldedit regen command
70ad51a8 Updated Upstream (Bukkit/CraftBukkit)
d7cfa4fa Improve legacy format serialization more
