RFC: Extended version-range descriptions for Cabal

[Neil Mitchell]

Hi

> >   m.n.o.*   ~~>    >= m.n.o && < m.n.(o+1)
>
> I like this.

Me too.

> >   m - n   ~~>   >= m && <= n

I would much prefer m .. n as the syntax, as that is the syntax for
ranges in Haskell.

Thanks

Neil