I've just published a new version on Bob's with the following changes:
* added UML class diagram button bar
* added more shape constructors, especially for UML shapes.
* fixed NCConnectorMorph owner logic in cases where both ends connect to 
shapes that are on different playfields

I'm still looking forward to comments and criticism, as well as suggestions 
and wish-lists.

I'd like to formally publish the change set(s) soon...

-- 
Ned Konz
currently: Stanwood, WA
email:     ned at bike-nomad.com
homepage:  http://bike-nomad.com