Paper 1.13.1 Update

Updated Upstream (Bukkit/CraftBukkit/Spigot)

Bukkit Changes:
2dcc44dc SPIGOT-4307: Fix hacky API for banners on shields
e0fc6572 SPIGOT-4309: Add "forced" display of particles
efeeab2f Add index to README.md for easier navigation
f502bc6f Update to Minecraft 1.13.1

CraftBukkit Changes:
d0bb0a1d Fix some tests randomly failing
997d378d Fix client stall in specific teleportation scenarios
b3dc2366 SPIGOT-4307: Fix hacky API for banners on shields
2a271162 SPIGOT-4301: Fix more invalid enchants
5d0d83bb SPIGOT-4309: Add "forced" display of particles
a6772578 Add additional tests for CraftBlockData
ce1af0c3 Update to Minecraft 1.13.1

Spigot Changes:
2440e189 Rebuild patches
4ecffced Update to Minecraft 1.13.1

Spigot-API-Patches/Make-EnderDragon-extend-Mob.patch

@@ -5,15 +5,15 @@ Subject: [PATCH] Make EnderDragon extend Mob
 
 
 diff --git a/src/main/java/org/bukkit/entity/EnderDragon.java b/src/main/java/org/bukkit/entity/EnderDragon.java
-index 8f200e6c..dad0b314 100644
+index 4ea0e44e7..fa115c091 100644
 --- a/src/main/java/org/bukkit/entity/EnderDragon.java
 +++ b/src/main/java/org/bukkit/entity/EnderDragon.java
 @@ -0,0 +0,0 @@ package org.bukkit.entity;
  /**
   * Represents an Ender Dragon
   */
--public interface EnderDragon extends ComplexLivingEntity, com.destroystokyo.paper.entity.SentientNPC { // Paper
-+public interface EnderDragon extends ComplexLivingEntity, com.destroystokyo.paper.entity.SentientNPC, org.bukkit.entity.Mob { // Paper - add Mob
+-public interface EnderDragon extends ComplexLivingEntity {
++public interface EnderDragon extends ComplexLivingEntity, org.bukkit.entity.Mob { // Paper - add Mob
  
      /**
       * Represents a phase or action that an Ender Dragon can perform.