Create more maps based on a single source_column #47
Description
Occasionally it might be necessary to map a certain source_column to the same property more than once.
Let's have a more concrete example. The authors of a publication may be described as a single value on a csv file, e.g. "Mannens, Erik ; Van de Walle, Rik". We need to map each author to an entity e.g. Person or to certain properties e.g. foaf:givenName and foaf:lastName. Or in a json case "name_last_first":"Mannens, Erik".
Possible solution would be to use the :process (and regular expression).