maps unpack

src/main/java/carpet/script/value/AbstractListValue.java

@@ -1,12 +1,15 @@
 package carpet.script.value;
 
 import carpet.script.exception.InternalExpressionException;
+import com.google.common.collect.Lists;
 
 import java.util.Iterator;
+import java.util.List;
 
 public abstract class AbstractListValue extends Value implements Iterable<Value>
 {
     public abstract Iterator<Value> iterator();
+    public List<Value> unpack() { return Lists.newArrayList(iterator()); }
     public void fatality() { }
     public void append(Value v)
     {