To test :
- Import a record with Id column (for upsert-ing) + some subfields in
each composite fields. Check that only matched subfields are updated
(Main issue)
- Import a record with a multi-select field - Check it works + Match
multi-select field on a non multi-select column, check it does not work.
(Specific bug fixed in second commit is : undefined value in multi
select column (corresponding to no item selected) caused error in
multi-select parsing).
closes https://github.com/twentyhq/core-team-issues/issues/990