Short list with things to finish for D2

[dsimcha]

== Quote from Chad J (chadjoan at __spam.is.bad__gmail.com)'s article
> Andrei Alexandrescu wrote:
> > grauzone wrote:
> >>
> >> Also, you should fix the auto-flattening of tuples before it's too
> >> late. I think everyone agrees that auto-flattening is a bad idea, and
> >> that tuples should be nestable. Flattening can be done manually with
> >> an unary operator.
> >>
> >> (Introducing sane tuples (e.g. unify type and value tuples, sane and
> >> short syntax, and all that) can wait for later if it must. Introducing
> >> these can be downwards compatible, I hope.)
> >
> > Non-flattening should be on the list but I am very afraid the solution
> > would take a long time to design, implement, and debug. I must discuss
> > this with Walter.
> >
> > Andrei
> Might I suggest a daring stop-gap:  kill tuples altogether.
> Then we can implement them later correctly and it won't break backwards
> compatibility.
> Ideally it isn't an all-or-nothing proposition either.  Maybe we can
> just kill the parts that are bad.  Like disallow tuples-of-tuples, but
> allow tuples that are already flat.
> - Chad

But that would destroy most of the metaprogramming capabilities of D.