Part 2 is out: https://news.ycombinator.com/item?id=10596078

Cool, thanks for sharing.

Maybe the online part is only available for students enrolled at CMU which is not my case. Self-study students download a different binary. Although it would be fun if it also had some online stuff.

Although it doesn't have a complete list of changes you can check some changes in the blog.

http://elixir-lang.org/blog/

There are some posts with a little summary of what happened during the week.

Yeah, the app had to be developed during 48 hours so I thought using Twitter for login would be better for me and also for users that don't want to fill forms and stuff.

But don't worry, I'm planning to add a way for non-Twitter users access it too.