📄️Get a page of the change history of an element
Returns one page of the recorded change-history entries for the given element type and reference id, newest first unless sorted otherwise (HET-2211). Each entry contains the timestamp, user name, the changed field name and its old and new values. Sortable by `timestamp`, `userName` and `propName` - any other field is answered with 400; equal values keep the order of the entries' ids. Optionally narrowed to a period and to a user name and a field name containing a text.