std.experimental.logger formal review round 3

[Martin Nowak via Digitalmars-d]

On 10/11/2014 03:34 PM, Robert burner Schadek wrote:
>>
> As answered multiply times before, to build log hierarchies.

You don't need classes for hierarchies. You need them for runtime 
polymorphism. We're already building complex hierarchies with Ranges, 
same can be done for loggers, see 
http://dpaste.dzfl.pl/2538c3b5d287#line-140.