Get contact data from SORMAS
sormas_get_contact_data(login, since)A data frame with the following three columns: 'case_id', 'contact_id', 'date_last_contact', 'date_first_contact'. When not available, 'date_last_contact' will not be returned
A list with the user's authentication details
A Date value in ISO8601 format (YYYY-mm-dd). Default is 0 i.e.
to fetch all cases from the beginning of data collection.