### Precheck

* For proposing a new feature, please start a discussion on the Elixir Core mailing list: https://groups.google.com/group/elixir-lang-core
* For bugs, do a quick search and make sure the bug has not yet been reported
* Please disclose security vulnerabilities privately at elixir-security@googlegroups.com
* Do not use the issues tracker for guidance, questions or support (try Elixir Forum, Stack Overflow, Slack, etc. instead)
* Finally, be nice and have fun!

### Environment

* Elixir & Erlang/OTP versions (elixir --version): 
* Operating system: 

### Current behavior

Include code samples, errors and stacktraces if appropriate.
If reporting a bug, please include the reproducing steps.

### Expected behavior

A short description on how you expect the code to behave.
