New (page-per-artifact) standard library doc examples are now editable and runnable

[Martin Nowak via Digitalmars-d-announce]

On 01/07/2017 05:12 PM, Andrei Alexandrescu wrote:
> Following https://github.com/dlang/dlang.org/pull/1532, the new-style
> docs now also allow editing and running examples. Start at
> http://dlang.org/library-prerelease/ and go anywhere to check it out.
> 
> Thanks are due to Sönke Ludwig and Sebastian Wilzbach!

Thanks, this is quite an amazing step towards more interactive
documentation.
Should we start to produce output as well, e.g. with some magic
`writeln` that's silent in actual tests?