Amsterdam-based challenger bank Bunq is updating its service with a handful of new features. In addition to Dutch, German and French bank account numbers, existing and new users in Spain can now get a Spanish IBAN. European IBANs are supposed to work across Europe. Your employer or internet provider can’t force you to get a local IBAN. And yet, that’s rarely the case. When you move to another European country, chances are the first thing you do is that you open a local bank account. While European fintech companies have…