call an event on beheading so other plugins can modify the dropped head

src/main/java/me/youhavetrouble/enchantio/events/EntityBeheadEvent.java

@@ -0,0 +1,53 @@
+package me.youhavetrouble.enchantio.events;
+
+import org.bukkit.entity.Entity;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.entity.EntityEvent;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Called when an entity is beheaded by a weapon with the Beheading enchantment.
+ */
+public class EntityBeheadEvent extends EntityEvent implements Cancellable {
+
+    private static final HandlerList HANDLERS = new HandlerList();
+
+    private ItemStack headToDrop;
+    private boolean cancelled = false;
+
+    public EntityBeheadEvent(@NotNull Entity entity, @NotNull ItemStack headToDrop) {
+        super(entity);
+        this.headToDrop = headToDrop;
+    }
+
+    public @NotNull ItemStack getHeadToDrop() {
+        return headToDrop;
+    }
+
+    public void setHeadToDrop(@NotNull ItemStack headToDrop) {
+        this.headToDrop = headToDrop;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean cancel) {
+        this.cancelled = cancel;
+    }
+
+    @Override
+    public @NotNull HandlerList getHandlers() {
+        return HANDLERS;
+    }
+
+    @NotNull
+    public static HandlerList getHandlerList() {
+        return HANDLERS;
+    }
+
+}