[PEAK] Trellis shared cells

[Jeffrey Harris]

Heh.  Of course now that you mention it I remember that message.  At the
time I didn't grasp the implications, so I didn't go re-read the email.
 Thanks!

Jeffrey

> Phillip has recently said "I was actually planning to [..] allow
> CellAttributes to treat an assignment of a cell as triggering a
> changed() notice to the old cell underneath, after first replacing
> it."