Accept , and ; as separator for aka. If there is no correctly annotated matching tag consider also those not correctly annotated. Accept a seqhence of names for getting the possibly matching tags.
Revised machting:
* Check if any aka names match any of the known names
* Check if the names are already tagged elsewhere and the current tag is a copy.
* Check if a value is not set and treat this as a joker but make a real match a stronger similarity
* Also consider remarks. Treat it as a weak similarity if it matches partly or is empty and a strong similarity if it matches exactly.
* Treat n.a. as siginificant, that is not matching like a joker.