Hello 
As the book grows and people start to add suggestions/errata/dependencies updates, etc. I realized that publishing the book via the Leanpub platform is not best suited to maintain this book long-term for the benefit of the community.
Taking the above under consideration, I decided to make my book publicly available online(as a website - you can still download the PDF and EPUB through it) as well as open-source the markdown files for the book itself 
I would like to say that I’m gratefully thankful for all the support from the Elixir community with this project(both book and videos) - I couldn’t do this without you! 
Here’s the new home of my book:
and here’s the source of it on GitHub:
Enjoy