Updated Upstream (Bukkit/CraftBukkit/Spigot)

Developers!: You will need to clean up your work/Minecraft/1.13.2 folder for this

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:
b850a822 SPIGOT-4526: Add conversion time API for Zombie & subclasses

CraftBukkit Changes:
38cf676e SPIGOT-4534: CreatureSpawnEvent not being called for CHUNK_GEN
b446cb5d SPIGOT-4527: Fix sponges with waterlogged blocks
6ec8ea5c SPIGOT-4526: Add conversion time API for Zombie & subclasses
c64fe508 Mappings Update
a3c2ec03 Fix missing ServerListPingEvent call for legacy pings

Spigot Changes:
1dc156ce Rebuild patches
140f654d Mappings Update

Spigot-Server-Patches/Optimize-Chunk-Access.patch

@@ -9,12 +9,12 @@ getChunkAt is called for the same chunk multiple times in a row, often from getT
 Optimize this look up by using a Last Access cache.
 
 diff --git a/src/main/java/net/minecraft/server/ChunkMap.java b/src/main/java/net/minecraft/server/ChunkMap.java
-index ca18901df..2ebb2d834 100644
+index 732c8793e..8b3738c8f 100644
 --- a/src/main/java/net/minecraft/server/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/ChunkMap.java
 @@ -0,0 +0,0 @@ public class ChunkMap extends Long2ObjectOpenHashMap<Chunk> {
  
-     public Chunk a(long i, Chunk chunk) {
+     public Chunk put(long i, Chunk chunk) {
          chunk.world.timings.syncChunkLoadPostTimer.startTiming(); // Paper
 +        lastChunkByPos = chunk; // Paper
          Chunk chunk1 = (Chunk) super.put(i, chunk);
@@ -68,8 +68,8 @@ index ca18901df..2ebb2d834 100644
 +    }
 +    // Paper end
  
-     public Chunk a(Object object) {
-         return this.a((Long) object);
+     public Chunk remove(Object object) {
+         return this.remove((Long) object);
 diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
 index 557aa5180..1d08ec37f 100644
 --- a/src/main/java/net/minecraft/server/ChunkProviderServer.java