diff --git a/spine-csharp/src/AnimationState.cs b/spine-csharp/src/AnimationState.cs
index d6693fbc7..713c2de72 100644
--- a/spine-csharp/src/AnimationState.cs
+++ b/spine-csharp/src/AnimationState.cs
@@ -40,13 +40,15 @@ namespace Spine {
 		public AnimationStateData Data { get { return data; } }
 		public float TimeScale { get { return timeScale; } set { timeScale = value; } }
 
-		/// <summary>The list of tracks that have animations, which may contain nulls.</summary>
-		public List<TrackEntry> Tracks { get { return tracks; } }
+		public delegate void StartEndDelegate(AnimationState state, int trackIndex);
+	    public StartEndDelegate Start;
+	    public StartEndDelegate End;
 
-		public event EventHandler<StartEndArgs> Start;
-		public event EventHandler<StartEndArgs> End;
-		public event EventHandler<EventTriggeredArgs> Event;
-		public event EventHandler<CompleteArgs> Complete;
+		public delegate void EventDelegate(AnimationState state, int trackIndex, Event e);
+		public EventDelegate Event;
+		
+		public delegate void CompleteDelete(AnimationState state, int trackIndex, int loopCount);
+		public CompleteDelete Complete;
 
 		public AnimationState (AnimationStateData data) {
 			if (data == null) throw new ArgumentNullException("data cannot be null.");
@@ -73,7 +75,7 @@ namespace Spine {
 				if (current.loop ? (current.lastTime % endTime > time % endTime) : (current.lastTime < endTime && time >= endTime)) {
 					int count = (int)(time / endTime);
 					current.OnComplete(this, i, count);
-					if (Complete != null) Complete(this, new CompleteArgs(i, count));
+					if (Complete != null) Complete(this, i, count);
 				}
 
 				TrackEntry next = current.next;
@@ -118,7 +120,7 @@ namespace Spine {
 				for (int ii = 0, nn = events.Count; ii < nn; ii++) {
 					Event e = events[ii];
 					current.OnEvent(this, i, e);
-					if (Event != null) Event(this, new EventTriggeredArgs(i, e));
+					if (Event != null) Event(this, i, e);
 				}
 
 				current.lastTime = current.time;
@@ -137,7 +139,7 @@ namespace Spine {
 			if (current == null) return;
 
 			current.OnEnd(this, trackIndex);
-			if (End != null) End(this, new StartEndArgs(trackIndex));
+			if (End != null) End(this, trackIndex);
 
 			tracks[trackIndex] = null;
 		}
@@ -156,7 +158,7 @@ namespace Spine {
 				current.previous = null;
 
 				current.OnEnd(this, index);
-				if (End != null) End(this, new StartEndArgs(index));
+				if (End != null) End(this, index);
 
 				entry.mixDuration = data.GetMix(current.animation, entry.animation);
 				if (entry.mixDuration > 0) {
@@ -172,7 +174,7 @@ namespace Spine {
 			tracks[index] = entry;
 
 			entry.OnStart(this, index);
-			if (Start != null) Start(this, new StartEndArgs(index));
+			if (Start != null) Start(this, index);
 		}
 
 		public TrackEntry SetAnimation (int trackIndex, String animationName, bool loop) {
@@ -245,34 +247,6 @@ namespace Spine {
 		}
 	}
 
-	public class EventTriggeredArgs : EventArgs {
-		public int TrackIndex { get; private set; }
-		public Event Event { get; private set; }
-
-		public EventTriggeredArgs (int trackIndex, Event e) {
-			TrackIndex = trackIndex;
-			Event = e;
-		}
-	}
-
-	public class CompleteArgs : EventArgs {
-		public int TrackIndex { get; private set; }
-		public int LoopCount { get; private set; }
-
-		public CompleteArgs (int trackIndex, int loopCount) {
-			TrackIndex = trackIndex;
-			LoopCount = loopCount;
-		}
-	}
-
-	public class StartEndArgs : EventArgs {
-		public int TrackIndex { get; private set; }
-
-		public StartEndArgs (int trackIndex) {
-			TrackIndex = trackIndex;
-		}
-	}
-
 	public class TrackEntry {
 		internal TrackEntry next, previous;
 		internal Animation animation;
@@ -287,26 +261,26 @@ namespace Spine {
 		public float EndTime { get { return endTime; } set { endTime = value; } }
 		public float TimeScale { get { return timeScale; } set { timeScale = value; } }
 		public bool Loop { get { return loop; } set { loop = value; } }
-
-		public event EventHandler<StartEndArgs> Start;
-		public event EventHandler<StartEndArgs> End;
-		public event EventHandler<EventTriggeredArgs> Event;
-		public event EventHandler<CompleteArgs> Complete;
+		
+	    public AnimationState.StartEndDelegate Start;
+	    public AnimationState.StartEndDelegate End;
+		public AnimationState.EventDelegate Event;
+		public AnimationState.CompleteDelete Complete;
 
 		internal void OnStart (AnimationState state, int index) {
-			if (Start != null) Start(state, new StartEndArgs(index));
+			if (Start != null) Start(state, index);
 		}
 
 		internal void OnEnd (AnimationState state, int index) {
-			if (End != null) End(state, new StartEndArgs(index));
+			if (End != null) End(state, index);
 		}
 
 		internal void OnEvent (AnimationState state, int index, Event e) {
-			if (Event != null) Event(state, new EventTriggeredArgs(index, e));
+			if (Event != null) Event(state, index, e);
 		}
 
 		internal void OnComplete (AnimationState state, int index, int loopCount) {
-			if (Complete != null) Complete(state, new CompleteArgs(index, loopCount));
+			if (Complete != null) Complete(state, index, loopCount);
 		}
 
 		override public String ToString () {
diff --git a/spine-tk2d/Assets/examples/spineboy/Spineboy.cs b/spine-tk2d/Assets/examples/spineboy/Spineboy.cs
index 947fb37c0..02d111180 100644
--- a/spine-tk2d/Assets/examples/spineboy/Spineboy.cs
+++ b/spine-tk2d/Assets/examples/spineboy/Spineboy.cs
@@ -38,9 +38,9 @@ public class Spineboy : MonoBehaviour {
 		skeleton = GetComponent<SkeletonAnimation>();
 		skeleton.state.Event += Event;
 	}
-	
-	public void Event (object sender, EventTriggeredArgs e) {
-		Debug.Log(e.TrackIndex + " " + skeleton.state.GetCurrent(e.TrackIndex) + ": event " + e.Event + ", " + e.Event.Int);
+
+	public void Event (Spine.AnimationState state, int trackIndex, Spine.Event e) {
+		Debug.Log(trackIndex + " " + state.GetCurrent(trackIndex) + ": event " + e + ", " + e.Int);
 	}
 
 	void OnMouseDown() {
diff --git a/spine-unity/Assets/examples/goblins/Goblins.cs b/spine-unity/Assets/examples/goblins/Goblins.cs
index ab5af0eca..240507b87 100644
--- a/spine-unity/Assets/examples/goblins/Goblins.cs
+++ b/spine-unity/Assets/examples/goblins/Goblins.cs
@@ -28,12 +28,25 @@
 
 using UnityEngine;
 using System.Collections;
+using Spine;
 
 public class Goblins : MonoBehaviour {
 	private bool girlSkin;
+	private SkeletonAnimation skeletonAnimation;
+	private Bone headBone;
+	
+	public void Start () {
+		skeletonAnimation = GetComponent<SkeletonAnimation>();
+		headBone = skeletonAnimation.skeleton.FindBone("head");
+		skeletonAnimation.UpdateBones += UpdateBones;
+	}
 
+	// This is called after the animation is applied to the skeleton and can be used to adjust the bones dynamically.
+	public void UpdateBones (SkeletonComponent skeletonAnimation) {
+		headBone.Rotation -= 15;
+	}
+	
 	public void OnMouseDown () {
-		SkeletonAnimation skeletonAnimation = GetComponent<SkeletonAnimation>();
 		skeletonAnimation.skeleton.SetSkin(girlSkin ? "goblin" : "goblingirl");
 		skeletonAnimation.skeleton.SetSlotsToSetupPose();
 		
diff --git a/spine-unity/Assets/examples/spineboy/Spineboy.cs b/spine-unity/Assets/examples/spineboy/Spineboy.cs
index 61c600e74..e81b7e0a7 100644
--- a/spine-unity/Assets/examples/spineboy/Spineboy.cs
+++ b/spine-unity/Assets/examples/spineboy/Spineboy.cs
@@ -39,8 +39,8 @@ public class Spineboy : MonoBehaviour {
 		skeletonAnimation.state.Event += Event;
 	}
 	
-	public void Event (object sender, EventTriggeredArgs e) {
-		Debug.Log(e.TrackIndex + " " + skeletonAnimation.state.GetCurrent(e.TrackIndex) + ": event " + e.Event + ", " + e.Event.Int);
+	public void Event (Spine.AnimationState state, int trackIndex, Spine.Event e) {
+		Debug.Log(trackIndex + " " + state.GetCurrent(trackIndex) + ": event " + e + ", " + e.Int);
 	}
 
 	public void OnMouseDown () {