lukasbicus

I will play with this one.

- is the usage of 3rd party libraries welcomed (f.e. for validation of IBAN)? - should the validation be arbitrary (configurable) or built-in?

I'm going to implement this.

`validator.js` will be a great choice. I checked the references section of `specification_v1.1.0.pdf`. I will be a little more specific - the `ISO 3166­1 alpha­3` will be used for country...

Please provide more details, what is meant by data sequence limit? How should it be limited?