Updated Upstream (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

CraftBukkit Changes:
2012f1e0 SPIGOT-5269: Item attribute modifiers don't persist their order
7a806a3a SPIGOT-5270: Call BlockSpreadEvent when bamboo saplings grow

Spigot Changes:
798ea6ab Add async catcher to World#save

Spigot-Server-Patches/Implement-World.getEntity-UUID-API.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Implement World.getEntity(UUID) API
 
 
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-index 61732ae8d..601265fb5 100644
+index d75ac36aa..5e53ee010 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 @@ -0,0 +0,0 @@ public class CraftWorld implements World {
@@ -23,5 +23,5 @@ index 61732ae8d..601265fb5 100644
 +
      @Override
      public void save() {
-         this.server.checkSaveState();
+         org.spigotmc.AsyncCatcher.catchOp("world save"); // Spigot
 --