ANNOUNCE: attribute 0.1

[ajb at spamcop.net]

G'day all.

Quoting Ross Paterson <ross at soi.city.ac.uk>:

> For an alternative design, see
> 
> http://haskell.org/pipermail/libraries/2003-September/001411.html

The problem with this design is that there may, in general, be more than
one "interesting" kind of Ref on a given state monad.

For example, I often use my own IORef-like class which supports the
Ord interface.  Others might want IORef-like objects which support
Hashable, or Show.

Cheers,
Andrew Bromage