Thank you for your feedback.
The good old X vs Y. I think its a matter of use-case and personal preference. The decision to pick yaml is solely because readability, which is, above what toml has to offer with its single-dimension. On the other side, yes, yaml has its own quirks such as primitive boolean (yes, true, on) and whitespace sensitivity;
still, yaml is still preferred type when we're talking devops.
I'll put this on a nice to have list- I'm quite sure the toml OR yaml for that matter, has an option to convert one way or another :)
Update: I've added the issue to the project.
I don't really understand how your comment has anything to do with the application I'm writing. I appreciate any constructive criticism to the application - The issue you and chrash0 are describing is usually solved with proper linting and formatting tools included to any IDE of your choice. Thank you anyways for sharing your PoV on YAML :)