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Updated "newsletter" exercise #391

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Nov 27, 2023
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Updated "newsletter" exercise #391

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2 changes: 2 additions & 0 deletions exercises/concept/newsletter/.docs/instructions.md
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Boris is a big model train enthusiast and has decided to share their passion with the world by starting a newsletter. They'll start by sending the first issue of the newsletter to friends and acquaintances that share the hobby, their email addresses are stored in a text file.

Hint: Use the [simplifile](https://hexdocs.pm/simplifile/simplifile.html) module for file operations.

## 1. Read email addresses from a file

Implement the `read_emails` function. It takes a path string to a text file that contains email addresses separated by newlines, and returns a list of the email addresses from the file.
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