Updates Elixir Version

[naomijub]

• Elixir version 1.10
• Updates deps
• Includes formatter and credo
• Applies credo's suggestions
• Include Github Actions

[psfblair]

Hello @naomijub --

Unfortunately, after merging the commit I find that the build is broken, with the following message. I also see

0s
1
Run mix test
2
mix test
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shell: /bin/bash -e {0}
4
** (Mix) You're trying to run :exdn on Elixir v1.10.3 but it has declared in its mix.exs file it supports only Elixir ~> 1.11
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Error: Process completed with exit code 1.
Post Restore dependencies cache

This looks like it comes from the following in elixir.yml:

   with:

     elixir-version: '1.10.3' # Define the elixir version [required]

I am also seeing that Github flagged the elixir.yml and the makefile for not ending with a newline.

Would you care to submit a PR to correct these issues? Thanks.

[naomijub]

This should help. #4
The problem is that most CI use docker hub to run, and there is no 1.11 elixir docker container yet. However, github actions downloads elixir 1.11 to run.

Thanks!