Change Changelog to + = ! - system

Cleanup some unneded SuppressWarnings
Monitor is where events that we don't cancel go, also we ignore cancelled events

src/main/java/com/gmail/nossr50/events/FakeEntityDamageByEntityEvent.java

@@ -3,7 +3,6 @@ package com.gmail.nossr50.events;
 import org.bukkit.entity.Entity;
 import org.bukkit.event.entity.EntityDamageByEntityEvent;
 
-@SuppressWarnings("serial")
 public class FakeEntityDamageByEntityEvent extends EntityDamageByEntityEvent {
 	public FakeEntityDamageByEntityEvent(Entity damager, Entity damagee, DamageCause cause, int damage) {
 		super(damager, damagee, cause, damage);

src/main/java/com/gmail/nossr50/events/McMMOItemSpawnEvent.java

@@ -25,7 +25,6 @@ import org.bukkit.inventory.ItemStack;
 /**
  * Called when mcMMO is preparing to drop an item
  */
-@SuppressWarnings("serial")
 public class McMMOItemSpawnEvent extends Event implements Cancellable {
 	private Location location;
 	private ItemStack itemStack;

src/main/java/com/gmail/nossr50/events/McMMOPlayerLevelUpEvent.java

@@ -25,7 +25,6 @@ import com.gmail.nossr50.datatypes.SkillType;
 /**
  * Called when a user levels up in a skill
  */
-@SuppressWarnings("serial")
 public class McMMOPlayerLevelUpEvent extends Event {
 	private Player player;
 	private SkillType skill;

src/main/java/com/gmail/nossr50/events/McMMOPlayerXpGainEvent.java

@@ -22,7 +22,6 @@ import org.bukkit.event.HandlerList;
 
 import com.gmail.nossr50.datatypes.SkillType;
 
-@SuppressWarnings("serial")
 public class McMMOPlayerXpGainEvent extends Event {
 	private Player player;
 	private SkillType skill;

src/main/java/com/gmail/nossr50/listeners/mcPlayerListener.java

@@ -79,7 +79,7 @@ public class mcPlayerListener implements Listener
 		plugin = instance;
 	}
 	
-	@EventHandler
+	@EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
 	public void onPlayerWorldChangeEvent(PlayerChangedWorldEvent event)
 	{
 	    Player player = event.getPlayer();