https://github.com/Respect/Config/blob/master/docs/README.md
Then, two years later, toml (by a GitHub founder) appeared. It is almost an exact clone of it.
https://github.com/toml-lang/toml
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You could say that is just a coincidence, and it's an obvious idea that anyone could have had.
But then again, also around that time, a sibling component for the configuration language was featured on "The Changelog" (then, a very popular website featuring interesting projects).
https://changelog.com/posts/validation-the-most-awesome-vali...
It stayed on trending PHP repositories for months.
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So, either toml was stolen or I independently invented it years prior.
Don't do easy to implement DSLs kids, there's no way of licensing them.