kazu-yamamoto/logger — pull request #36 by ibotty (2014-01-08 15:00:30+00:00)
Title: implement logging to stderr

introduces the following new functions

* `newFileLoggerSet :: BufSize -> FilePath -> IO LoggerSetSource`
* `newStdOutLoggerSet :: BufSize -> IO LoggerSetSource`
* `newStdErrLoggerSet :: BufSize -> IO LoggerSetSource`

see issue #35.