I beg you, if you are a developer of an open source app or program - add screenshots of your app to the README file. When looking for the perfect app, I had to install dozens of them just to see what the user interface looked like and whether it suits me. This will allow users to decide if the app they choose will suit them… Please, don’t think about it, just do it…
While we’re at it, I love that you let me customize the settings via a config, but for the love of god make the default config the best it can possibly be
This. It should be the most sane configuration and fit most use cases and lead to an experience working out of the box.