The book is content-complete and heading to production.
14 October 2017
We added Chapter 7, Handle Impure Functions, which looks at how to work with impure functions, and Appendix 1, Adding Rooms to the Game, which offers suggestions on how you can implement more challenges to your game.
All current errata have been addressed.
28 September 2017
We added Chapter 6, Design Your Elixir Applications which is about creating a larger application and organizing it.