Reverse context cascade searching order.

Assets/Cryville/Crtr/PdtEvaluator.cs

@@ -33,7 +33,8 @@ namespace Cryville.Crtr {
 				}
 				else {
 					PropSrc.Arbitrary result;
-					foreach (var cas in ContextCascade) {
+					for (int i = ContextCascade.Count - 1; i >= 0; i--) {
+						Dictionary<int, PropSrc.Arbitrary> cas = ContextCascade[i];
 						if (cas.TryGetValue(name, out result)) {
 							result.Get(out type, out value);
 							return;