Implement effect.

Assets/Cryville/Crtr/Skin.cs

@@ -59,9 +59,6 @@ namespace Cryville.Crtr {
 			foreach (var e in effects) {
 				var effect = e.Value;
 				etor.ContextCascadeInsert();
-				if (effect.args != null) foreach (var i in effect.args) {
-					etor.ContextCascadeUpdate(i.Key, PropSrc.Error);
-				}
 				etor.Optimize(effect.duration);
 				effect.elements.Optimize(etor);
 				etor.ContextCascadeDiscard();
@@ -101,7 +98,6 @@ namespace Cryville.Crtr {
 	}
 
 	public class EffectDefinition {
-		public Identifier[] args;
 		public PdtExpression duration;
 		public SkinElement elements;
 	}