add revert as well as undo

Runtime/Util/UndoGroup.cs

@@ -21,7 +21,7 @@ namespace VelNet
 
 
 		/// <summary>
-		/// Reset to the last UndoState. This only takes ownership if the IPackState component is also a NetworkComponent
+		/// Reset to the last UndoState and remove the state from history. This only takes ownership if the IPackState component is also a NetworkComponent
 		/// </summary>
 		public void Undo()
 		{
@@ -43,6 +43,28 @@ namespace VelNet
 			}
 		}
 
+		/// <summary>
+		/// Reset to the last UndoState. This only takes ownership if the IPackState component is also a NetworkComponent
+		/// </summary>
+		public void Revert()
+		{
+			byte[][] lastStates = undoBuffer.LastOrDefault();
+			if (lastStates != null)
+			{
+				for (int i = 0; i < objects.Count; i++)
+				{
+					objects[i].networkObject.TakeOwnership();
+					objects[i].UnpackState(lastStates[i]);
+				}
+
+				if (debugLog) Debug.Log($"Revert {objects.Count} objects");
+			}
+			else
+			{
+				if (debugLog) Debug.Log($"No more undo to undo");
+			}
+		}
+
 		public void SaveUndoState()
 		{
 			byte[][] states = new byte[objects.Count][];

package.json

@@ -1,7 +1,7 @@
 {
 	"name": "edu.uga.engr.vel.velnet",
 	"displayName": "VelNet",
-	"version": "1.2.2",
+	"version": "1.2.3",
 	"unity": "2019.1",
 	"description": "A custom networking library for Unity.",
 	"keywords": [