Perfect forwarding

[Andrej Mitrovic]

On Tuesday, 28 July 2020 at 05:34:59 UTC, Petar Kirov 
[ZombineDev] wrote:
> @Andrei @Atila @Walter what do you guys think?
>
> [1]: https://github.com/dlang/dmd/pull/5201

The community (and maintainers) need to settle on the desired set 
of traits, and then we can think about how to best implement it.

I'm sure the PR is very outdated by now, there's probably better 
ways of implementing it.