std.experimental.logger formal review round 3

[Martin Nowak via Digitalmars-d]

On Sunday, 12 October 2014 at 12:06:44 UTC, Robert burner Schadek 
wrote:
>> What's stopping an interface or class to implement a logging 
>> concept?
>
> Same as last time:
> Logger[], Logger without a LogLevel not real useful IMO, (new) 
> no thread safety by default

I don't understand your answer. Do you have a link to your last 
response.