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-Server-Patches/Prevent-Pathfinding-out-of-World-Border.patch

@@ -26,12 +26,12 @@ index 76d1f4bd21..76b2787bae 100644
              if (this.c != null && !this.c.b() && blockposition.equals(this.q)) {
                  return this.c;
 diff --git a/src/main/java/net/minecraft/server/WorldBorder.java b/src/main/java/net/minecraft/server/WorldBorder.java
-index 4763c30a81..ec5386fd50 100644
+index acd76e13bb..1a87480f09 100644
 --- a/src/main/java/net/minecraft/server/WorldBorder.java
 +++ b/src/main/java/net/minecraft/server/WorldBorder.java
 @@ -0,0 +0,0 @@ public class WorldBorder {
-         this.l = 5;
-     }
+ 
+     public WorldBorder() {}
  
 -    public boolean a(BlockPosition blockposition) {
 +    public boolean isInBounds(BlockPosition blockposition) { return a(blockposition); }public boolean a(BlockPosition blockposition) { // Paper - OBFHELPER