std.experimental.logger formal review round 3

[Robert burner Schadek via Digitalmars-d]

On Wednesday, 15 October 2014 at 02:54:27 UTC, Dicebot wrote:
> As there was quite some last moment feedback I am giving some 
> more time for me to research issues a bit and Robert to address 
> them :)

No need, I fixed the MultiLogger last weekend.