Sirupsen/logrus — pull request #92 by rasky (2014-12-15 19:27:30+00:00)
Title: Avoid extra quotes where not strictly necessary.

It's not necessary to enclose in quotes every single string value
in log2met format; when using basic words, it's possible to not
quote it (as heroku does for its own logging). This keeps the
logs easier on the human eye.