Log Message:
devel/hs-monad-logger: Update to 0.3.39

0.3.39
* Make the previous change backwards compatible with CPP

0.3.38
* Drop old deprecated instances to support transformers 0.6 #39

0.3.37
* Add Semigroup/Monoid instances to LoggingT, NoLoggingT, and
  WriterLoggingT