Avoid item merge if stack size above max stack size (#1217)

LICENSE.md

@@ -33,4 +33,5 @@ MiniDigger | Martin <admin@minidigger.dev>
 Brokkonaut <hannos17@gmx.de>
 vemacs <d@nkmem.es>
 stonar96 <minecraft.stonar96@gmail.com>
+Hugo Manrique <hugmanrique@gmail.com>
 ```

Spigot-Server-Patches/Avoid-item-merge-if-stack-size-above-max-stack-size.patch

@@ -0,0 +1,23 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Hugo Manrique <hugmanrique@gmail.com>
+Date: Mon, 16 Jul 2018 12:42:20 +0200
+Subject: [PATCH] Avoid item merge if stack size above max stack size
+
+
+diff --git a/src/main/java/net/minecraft/server/EntityItem.java b/src/main/java/net/minecraft/server/EntityItem.java
+index 0b7fc327..099bc755 100644
+--- a/src/main/java/net/minecraft/server/EntityItem.java
++++ b/src/main/java/net/minecraft/server/EntityItem.java
+@@ -0,0 +0,0 @@ public class EntityItem extends Entity implements HopperPusher {
+     // Spigot end
+ 
+     private void x() {
++        // Paper start - avoid item merge if stack size above max stack size
++        ItemStack stack = getItemStack();
++        if (stack.getCount() >= stack.getMaxStackSize()) return;
++        // Paper end
++
+         // Spigot start
+         double radius = world.spigotConfig.itemMerge;
+         Iterator iterator = this.world.a(EntityItem.class, this.getBoundingBox().grow(radius, radius, radius)).iterator();
+--