change name_helper to return dictionary
rewrite assignee_list to return list of lists of dictionaries
maintain compatibility with old _name_helper
have new assignee_list use _name_helper_dict
if no document_id, return empty string
add new citation_list method to return dictionaries
fix names on dict return for name helper
add inventor_list method to return list of dicts
change asg_dict to asg to be consistent
add lawyer_list method to return list of dicts
add _fix_date method
remove unused _add_sequence method
fix up date in citation_list
add new us_relation_list method
remove old usreldoc method