std.experimental.logger formal review round 3

[Dicebot via Digitalmars-d]

On Sunday, 2 November 2014 at 00:29:10 UTC, Jakob Ovrum wrote:
> On Saturday, 1 November 2014 at 17:35:37 UTC, David Nadlinger 
> wrote:
>> There is still a critical issue with std.experimental.logger 
>> that would prevent it from being merged right now: The abuse 
>> of @trusted all over the code.
>
> Thank you. I was afraid I'd have to harp on it for the fourth 
> time...

Sorry, it is really hard to follow important bits in many 
discussions spawned :( I'll take a go at @safe-ty issue 
personally this time.