minor cleanup

enabled an automatic merge when the pipeline for 93d14d84 succeeds

aborted the automatic merge because source branch was updated

added 2 commits

• aa402e33 - Datafield + copy c'tor required by Win
• 27c50dad - Datafield: express all c'tors by one

Compare with previous version

enabled an automatic merge when the pipeline for 27c50dad succeeds

merged

mentioned in commit 96c1aa31