Updated Upstream (Bukkit/CraftBukkit/Spigot)

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

Bukkit Changes:
bb813f6f SPIGOT-4605: Warn against hacking physics

CraftBukkit Changes:
2ced0233 Don't handle sync packets for kicked players
d5e96882 SPIGOT-4602: Cache reflection in decompile error workaround

Spigot Changes:
b0f4c22b SPIGOT-4605: Catch more physics problems

Spigot-Server-Patches/Paper-config-files.patch

@@ -572,7 +572,7 @@ index ee16fac91..b8abd6363 100644
 +    // Paper end
  }
 diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
-index 6ea9eaa1a..5531f5205 100644
+index 90c54a73d..9865f7f7a 100644
 --- a/src/main/java/net/minecraft/server/World.java
 +++ b/src/main/java/net/minecraft/server/World.java
 @@ -0,0 +0,0 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
@@ -583,7 +583,7 @@ index 6ea9eaa1a..5531f5205 100644
 +
      public final SpigotTimings.WorldTimingsHandler timings; // Spigot
      private boolean guardEntityList; // Spigot
-     public static boolean haveWeSilencedAPhysicsCrash;
+     public static BlockPosition lastPhysicsProblem; // Spigot
 @@ -0,0 +0,0 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
  
      protected World(IDataManager idatamanager, @Nullable PersistentCollection persistentcollection, WorldData worlddata, WorldProvider worldprovider, MethodProfiler methodprofiler, boolean flag, ChunkGenerator gen, org.bukkit.World.Environment env) {