Release D 2.073.0

[Nordlöw via Digitalmars-d-announce]

On Friday, 27 January 2017 at 11:12:22 UTC, Dicebot wrote:
> And also stuff like https://github.com/dlang/druntime/pull/1740 
> - I think the story behind `return scope` is the critical point 
> for me. It is worst technical disaster that has happened to 
> compiler in years, and I am going to blame Walter personally 
> for it.

So what would the alternative be?