We had a good deal of discussion earlier about adding Object>>is:
with an inconclusive outcome:
  http://lists.squeakfoundation.org/pipermail/squeak-dev/2010-April/148501.html

Igor's original proposal is:
  http://lists.squeakfoundation.org/pipermail/squeak-dev/2009-June/136793.html

I have been tinkering around with Juan's SimpleMorphic in hopes of
getting it running in Squeak alongside MVC and Morphic, and it would
be convenient to have the default implementation of #is: in the image
so I don't have to put it in a package override.

Any strong objections?

Dave