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_filelogger.html
http://burner.github.io/phobos/phobos-prerelease/std_logger_multilogger.html
http://burner.github.io/phobos/phobos-prerelease/std_logger_nulllogger.html

dub
http://code.dlang.org/packages/logger
Refreshing a comment by @jacob-carlborg: Why is it necessary to have both `filePtr` and `file`?

Would it make a difference for users of FileLogger if you either
 a) returned `*filePtr_` from `file()` and dropped `filePtr()`, or
 b) dropped `file()`?