The content of the `${HOME}/.unfollow/followers.json` is plaintext instead of json

[ddjerqq]

When you're saving the followers to the JSON file, instead of saving it as plaintext separated by new lines, you could save the GitHub user ids along with their names inside of JSON objects like this

[
  {
    "id": 123,
    "username": "ddjerqq"
  },
  // more
]

this would handle cases where users change their handles!

I could help you with this.