thoughtbot/suspenders — pull request #192 by croaky (2013-07-11 21:34:07+00:00)
Title: Use New Relic RPM gem >= 3.5.7 for Heroku accuracy

http://blog.newrelic.com/2013/02/21/using-new-relic-on-heroku-read-how-our-new-ruby-agent-measures-queue-time/