deprecate com.jme3.anim.Weights - see issue #1520 (#1523)

jme3-core/src/main/java/com/jme3/anim/Weights.java

@@ -2,6 +2,7 @@ package com.jme3.anim;
 
 import java.util.ArrayList;
 
+@Deprecated
 public class Weights {//}  extends Savable, JmeCloneable{