Optimize Hoppers

- Lots of itemstack cloning removed. Only clone if the item is actually moved
- Return true when a plugin cancels inventory move item event instead of false, as false causes pulls to cycle through all items.
  However, pushes do not exhibit the same behavior, so this is not something plugins could of been relying on.
- Add option (Default on) to cooldown hoppers when they fail to move an item due to full inventory
- Skip subsequent InventoryMoveItemEvents if a plugin does not use the item after first event fire for an iteration

Spigot-Server-Patches/Add-EntityZapEvent.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Add EntityZapEvent
 
 
 diff --git a/src/main/java/net/minecraft/server/EntityPig.java b/src/main/java/net/minecraft/server/EntityPig.java
-index 94d01172..fcf99e66 100644
+index 94d011721..fcf99e668 100644
 --- a/src/main/java/net/minecraft/server/EntityPig.java
 +++ b/src/main/java/net/minecraft/server/EntityPig.java
 @@ -0,0 +0,0 @@ public class EntityPig extends EntityAnimal {
@@ -22,7 +22,7 @@ index 94d01172..fcf99e66 100644
              if (CraftEventFactory.callPigZapEvent(this, entitylightning, entitypigzombie).isCancelled()) {
                  return;
 diff --git a/src/main/java/net/minecraft/server/EntityVillager.java b/src/main/java/net/minecraft/server/EntityVillager.java
-index fe137ed0..09b466fc 100644
+index fe137ed06..09b466fcb 100644
 --- a/src/main/java/net/minecraft/server/EntityVillager.java
 +++ b/src/main/java/net/minecraft/server/EntityVillager.java
 @@ -0,0 +0,0 @@ public class EntityVillager extends EntityAgeable implements NPC, IMerchant {
@@ -48,7 +48,7 @@ index fe137ed0..09b466fc 100644
          }
      }
 diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
-index bc84dd30..ba7e5d18 100644
+index bc84dd30f..ba7e5d181 100644
 --- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
 +++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
 @@ -0,0 +0,0 @@ public class CraftEventFactory {