Use iso8601.parse_date instead of dateutil.parser.parse.
iso8601 is more strict, and less inefficient.
Depends on !129 (closed).
Migrated from D2678 (view on Phabricator)
iso8601 is more strict, and less inefficient.
Depends on !129 (closed).
Migrated from D2678 (view on Phabricator)