Update updateChildren for newer version

veautiful.md

@@ -216,14 +216,18 @@ trait DiffNode extends DNode with MakeItSo {
 
   def updateChildren(to:Seq[VNode]):Unit = {
     // Use a diff algorithm to work out changes to make to children
-    val diffOps = Differ.seqDiff(children, to)
+    val diffReport = Differ.diffs(children, to)
 
     // implement changes
+    Differ.processDiffs(this, diffReport.ops)
+    children = diffReport.update    
 
     // Recurse down the DiffNode's (new) children, getting them to "make it so"
-    updating.zip(to).collect({ case (x:MakeItSo, y:MakeItSo) => 
-      x.makeItSo(y) 
-    })
+    children.iterator.zip(to.iterator) foreach {
+      case (uu:MakeItSo, tt:MakeItSo) => uu.makeItSo(tt)
+      case (u:Update, _) => u.update()
+      case _ => // nothing to do
+    }
   
 }
 ```