Smart pointers instead of GC?

[Andrej Mitrovic]

On 2/2/14, Andrei Alexandrescu <SeeWebsiteForEmail at erdani.org> wrote:
> 2. Work on Phobos to see what can be done about avoiding unnecessary
> allocation. Most likely we'll need to also add a @nogc flag.

See Johannes'es pull here:
https://github.com/D-Programming-Language/dmd/pull/1886

Where he comments:

```
Note: This could also be a start to implement a -nogc parameter which
would check a whole module not to use the GC. This is less intrusive
than a @nogc attribute.
```