It would awesome if you could make the alignment of the title editable (left, center, right)

Hi,
thank you for the library. It really improved the way I approach configuration files.
Finally I have types and proper sections.
What I am missing is schema: I would love to be able to enforce that some parameters are obligatory, their type and provide a description, also raise an exception if there is some unknown parameter is configured.
I think I could use something like marshmallow

Similar to the Email validator.