Unwrap Event Exceptions

This was a useless exception wrapper that ends up making
stack traces harder to read as well as the JVM cutting off
the important parts

Nothing catches this exception, so its safe to just get rid
of it and let the REAL exception bubble down

Spigot-API-Patches/0065-LivingEntity-setKiller.patch

@@ -0,0 +1,38 @@
+From 66621223158643139e2189afc257009daf70f05e Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Mon, 31 Jul 2017 01:49:43 -0500
+Subject: [PATCH] LivingEntity#setKiller
+
+
+diff --git a/src/main/java/org/bukkit/entity/LivingEntity.java b/src/main/java/org/bukkit/entity/LivingEntity.java
+index f67711fd..3f93b70c 100644
+--- a/src/main/java/org/bukkit/entity/LivingEntity.java
++++ b/src/main/java/org/bukkit/entity/LivingEntity.java
+@@ -17,6 +17,8 @@ import org.bukkit.projectiles.ProjectileSource;
+ import org.bukkit.util.RayTraceResult;
+ import org.bukkit.util.Vector;
+ 
++import javax.annotation.Nullable;
++
+ /**
+  * Represents a living entity, such as a monster or player
+  */
+@@ -239,6 +241,15 @@ public interface LivingEntity extends Attributable, Damageable, ProjectileSource
+      */
+     public Player getKiller();
+ 
++    // Paper start
++    /**
++     * Sets the player identified as the killer of the living entity.
++     *
++     * @param killer player
++     */
++    public void setKiller(@Nullable Player killer);
++    // Paper end
++
+     /**
+      * Adds the given {@link PotionEffect} to the living entity.
+      * <p>
+-- 
+2.20.1
+