history> are mapped to database
#pod columns. The entire argument is also stored in one field as JSON, and a few
#pod other attributes are always required (like C<by_whom>) and some are added just
#p
<add_history> are mapped to database
columns. The entire argument is also stored in one field as JSON, and a few
other attributes are always required (like C<by_whom>) and some are added just
in time