It seems ListComposableModel was replaced by ListModel in Pharo 3.0. This is
a significant non-backward-compatible change, yet it was extremely difficult
to find out what was going on - no hits searching the mailing lists and the
Issue "10462: Add SpecModel for NewList" says nothing about removing
ListComposableModel. I think it's important to think "how are users going to
figure out wth happened here" when we make changes like this.



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Cheers,
Sean
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