update todo

pd/nw/todo.txt

@@ -72,7 +72,7 @@ Everything else: (A [x] means we've fixed it)
     or hard-code a separate div.)
 [ ] looks like nwworkingdir isn't working for open/save dialogs atm
 [x] text_set doesn't work when a numbox is first created (but works otherwise)
-[ ] clean up nw_create_window (doesn't need so many parameters)
+[x] clean up nw_create_window (doesn't need so many parameters)
 [ ] make it possible to have the inner cells of hradio change color with the
     selection, as the border currently does.  Tk just uses the non-hierarchical
     tags and appends the word "BASE".  (Maybe use an inner <g> to do this.)