Support for ini files

[vorner]

Hello

Would it be possible to add a support for ini files? I know they are not as expressive as the other formats, but there may be reasons to want to work with them (like some other tools that produce/manage them and don't know anything better).

I was able to create a hacky solution for myself ‒ using the rust-ini crate, fill another Config instance and merge that as a source (and using keys with dots in them to refer to deeper levels), but a built-in would be nice. Though I don't know what to do with arrays properly.

[toyg]

Isn't this what #72 provides?

[vorner]

Yes, it seems so.

[mehcode]

This will be in the next release. Thanks @woodgear