Add generic "owner" field

So it can be populated by external tools, and made visible if it's present

mentioned in commit ab877ac8

mentioned in merge request !27 (merged)

marked this issue as related to #53 (closed)

marked this issue as related to #54 (closed)

closed with commit ab877ac8

mentioned in commit 2fefddee

marked this issue as related to #146 (closed)