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:
5b680f0b Note maximum objective score length in documentation

CraftBukkit Changes:
5932f8a7 Load default world spawn areas in consistent order
3a5dc78f Fix confusing migration message appearing on fresh server
516a408f Remove redundant CraftBukkit change for secondary world data
73a2c749 Process conversation input on the main thread.
100c3f07 Cap Objective Score Length
6e842759 Cross World Entity Teleportation
7deba1c6 Check for blank OfflinePlayer Names
f2746a5e Descriptive kick reasons instead of Nope!
b0212308 Cap Channel Registrations
a610dcd8 Identify CraftScheduler threads with useful names

Spigot Changes:
19c3c5a5 Rebuild patches

Spigot-Server-Patches/Auto-Save-Improvements.patch

@@ -121,7 +121,7 @@ index 749e41aed..97714be6d 100644
      public final MinecraftServer server;
      public final PlayerInteractManager playerInteractManager;
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index 7710962ce..f09d358e2 100644
+index 7e1711b2f..a5047084e 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
 @@ -0,0 +0,0 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
@@ -207,7 +207,7 @@ index 79641a73a..fe6649224 100644
      public WhiteList getWhitelist() {
          return this.whitelist;
 diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
-index fa7466d64..48d70624c 100644
+index 1d46b8967..1e7e503eb 100644
 --- a/src/main/java/net/minecraft/server/WorldServer.java
 +++ b/src/main/java/net/minecraft/server/WorldServer.java
 @@ -0,0 +0,0 @@ public class WorldServer extends World implements IAsyncTaskHandler {