widget properties

[Brian Milby]

> > Brian M. wrote:
> > One other thing that could be done is to extend the export to include
> > everything that the engine knows about the widget (i.e. add the
> > properties array to it).
>
> The widget author can already do that by defining a list of persistent
> properties. Why should the engine override that?


I see this as a unification rather than override.  When a stack is saved it
asks each widget what it wants to save but also includes other properties
too (rect, layer, id, ...).