What do you want to see for a mature DLang?

[Walter Bright]

On 12/28/2017 11:53 PM, IM wrote:
> Simple things like these make a big difference. D Lang has been around for a 
> long while now, and hence signs of its maturity has to show everywhere, 
> especially in the compiler, as well as the package manager.

Diverging from the:

   file(line): message

format is problematic because a lot of editors rely on that to position the 
editor on the offending line.