Last name prefix 'van den' is not parsed as part of the last name

[pillowfication]

'van den' is treated like a middle name, unlike 'van der', 'van de', etc.

parse('Johannes van den Bosch').last // 'Bosch'
parse('Johannes van der Bosch').last // 'van der Bosch'
parse('Johannes van de Bosch').last  // 'van de Bosch'

[chris-pardy]

@pillowfication we've taken over ownership of this library I'm moving issues into our fork. Please feel free to comment further on your issue there.