NOTICE - Removing init_ return value

I am always experimenting with how to be a BDFL.  My BDFL challenge message
about classes was a recent example.  I hope no one was offended.

This message is another experiment.  When I start a message with NOTICE this
means that I am proposing a change but I expect everyone will agree and if
no one replies then I will make the change.

In this case I am proposing to remove the feature to be able to return a
value from init_ and replace the object being initialized.  I argued for
this and everyone argued against it which is why I think no one will
complain now that I am removing it.

Serge complained about it and he finally got to my conscience.  My examples
were things that should have been done a different way.  I will now have to
go through my code and fix all the places I used it.