std.logger

String logging facilities for Phobos.

Docu:
http://burner.github.io/phobos/phobos-prerelease/std_logger_core.html
http://burner.github.io/phobos/phobos-prerelease/std_logger_stdiologger.html
http://burner.github.io/phobos/phobos-prerelease/std_logger_filelogger.html
http://burner.github.io/phobos/phobos-prerelease/std_logger_multilogger.html
http://burner.github.io/phobos/phobos-prerelease/std_logger_nulllogger.html
http://burner.github.io/phobos/phobos-prerelease/std_logger_templatelogger.html

dub
http://code.dlang.org/packages/logger
This and the `StdioLogger` (still poorly named) should be entirely obsoleted by `new FileLogger(stderr)` and `new FileLogger(stdout)`.

`new StdioLogger()` is no more clear than `new FileLogger(stdout)`, while the latter emphasizes how flexible `FileLogger` is - it doesn't have to be used with named files, it can be used with any unnamed files and pipes, such as the ones returned by std.process.pipeProcess. And, of course, the latter saves us 120 lines and two source modules *with documentation* just to provide special names for these two cases...