D1 operator overloads have been deprecated.

[Adam D. Ruppe]

On Thursday, 11 July 2019 at 20:29:19 UTC, Basile B. wrote:
> It rather looks like a big whoopsie. Nobody has thought to this 
> case during the review stage[1]

I remember it coming up, maybe not formally, but the solution of 
just forwarding the final templates to a virtual implementation, 
mentioned above, has been around for a while.