How updated is the Programming Elixir 1.2 regards Elixir 1.11?

I have the Programming Elixir 1.2 lying around and I decided to really get into Elixir. How this book is updated with Elixir 1.11? The language changed a ton or the book is still “actual”?

All the changes can be found here: (you can click the link at the bottom to find the changes for the previous minor release).

I think it’s still very relevant. The core language is very much the same.