Add rewind and tick mechanism for skin component.

Assets/Cryville/Crtr/EffectGroup.cs

@@ -41,7 +41,7 @@ namespace Cryville.Crtr {
 				_endQueue.RemoveAt(0);
 			}
 			foreach (var instance in _instances) {
-				instance.Value.Tick();
+				instance.Value.Tick(time);
 			}
 		}
 		public void Emit(float index) {
@@ -53,6 +53,7 @@ namespace Cryville.Crtr {
 			else {
 				_instances.Add(index, instance = _pool.Rent());
 			}
+			instance.Rewind(_time);
 			instance.Index = index;
 			instance.OnEmit(_time);
 			var i2 = ~_endQueue.BinarySearch(instance);