`Case.of(Case.pascal(string)) === "capital"`

I just stumbled upon this issue:

If I have a string like "Room", `Case.of()` returns `capital`.
If I turn it into a pascal string (which it already is) and then get the case of that `Case.of(Case.pascal('Room')`, it still returns `capital`.

I think there is some kind of configuration needed on how to handle single word strings, because those are ambiguous. I could propose a PR if you like.

