Rename 'D' to 'D++'

[Ola Fosheim Grøstad via Digitalmars-d]

On Friday, 10 March 2017 at 14:39:18 UTC, Traktor TOni wrote:
> You dont have to get all salty about it, just admit that D is 
> more like C++ and then we can propose the name change 
> officially on github. Maybe this would help with adoption too, 
> Rust has no problem calling itself a successor to C++ rather 
> than C, so D shouldnt be afraid of this legacy either.

C+1 == D

C++
C == D