Episodes Archives Random The Changelog - Open Source moves fast. Keep up. Latest episode Episode 0.8.1 - Celluloid, concurrency, and more with Tony Arcieri Wynn talked with Tony Arcieri, creator of Celluloid about concurrency in Ruby and his thoughts on Erlang, Clojure, and design patterns. Go to episode The Changelog is a weekly podcast and blog that covers what's fresh and new in Open Source. Fr