We keep wrapping Tk widgets like crazy.  We should properly
make all the new widgets that we need.  Here are some that I
can think of:

- Easier to use HList (already in progress)
- Toplevel that load/saves geometry and can only be
  destroyed once.  Should implement the WM_DELETE_WINDOW
  protocol.
- Possibly a better Listbox which gives useful selection 
  information