raise error if yaml contains keys not used by `WindUpConfig`

[aclerc]

I believe if you include keys in a config yaml which are not attributes of WindUpConfig no error is raised. This is not ideal because if you misspell a key and it has a default value then your intended value won't take effect and you will get no indication of this.

[meetsushantpatil]

@polys Can you assign this to me? can take this up.