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/Block-player-logins-during-server-shutdown.patch

@@ -5,13 +5,13 @@ Subject: [PATCH] Block player logins during server shutdown
 
 
 diff --git a/src/main/java/net/minecraft/server/LoginListener.java b/src/main/java/net/minecraft/server/LoginListener.java
-index bb08200e7..90d1096e5 100644
+index 9f6b73d80..af5c699fe 100644
 --- a/src/main/java/net/minecraft/server/LoginListener.java
 +++ b/src/main/java/net/minecraft/server/LoginListener.java
 @@ -0,0 +0,0 @@ public class LoginListener implements PacketLoginInListener, ITickable {
      }
  
-     public void Y_() {
+     public void tick() {
 +        // Paper start - Do not allow logins while the server is shutting down
 +        if (!MinecraftServer.getServer().isRunning()) {
 +            this.disconnect(new ChatMessage(org.spigotmc.SpigotConfig.restartMessage));