proposal: short => rewrite for function declarations

[Paul Backus]

On Saturday, 10 October 2020 at 20:43:55 UTC, Steven 
Schveighoffer wrote:
> I think if D is going to go this route, it needs to at least 
> get rid of the ambiguity of => {return expr;}, which is 
> currently "return a delegate/function that returns expr".

IMO this is a good idea regardless. I've fallen into the `=> { 
... }` pit myself multiple times when refactoring from short to 
long delegate syntax, and I'm sure I'm not the only one.