Updating D beyond Unicode 2.0

[Dennis]

On Monday, 24 September 2018 at 01:32:38 UTC, Walter Bright wrote:
> D the language is well suited to the development of Unicode 
> apps. D source code is another matter.

But in the article you specifically talk about the use of Unicode 
in the context of source code instead of apps:

"With the D programming language, we continuously run up against 
the problem that ASCII has reached its expressivity limits."

"There are the chevrons « and » which serve as another set of 
brackets to lighten the overburdened ambiguities of ( ). There 
are the dot-product and cross-product characters · and × which 
would make lovely infix operator tokens for math libraries. The 
greek letters would be great for math variable names."