Making byLine faster: we should be able to delegate this

[Robert burner Schadek via Digitalmars-d]

On Monday, 23 March 2015 at 15:00:07 UTC, John Colvin wrote:
> What would be really great would be a performance test suite 
> for phobos.

I'm working on it

https://github.com/D-Programming-Language/phobos/pull/2995