3.20 - Article flags 18 March 2022 - Custom fields and flags:    - custom fields are now displayable in articles lists    - select fields (both standard and custom) can now trigger flags on article lists and article pagesThese two features are very useful to identify specific workflows / critical articles - Mail history: users may now mask automatic mails in mail history.We realised mail history could get very crowded when several co-authors/editors are involved in an article.Masking automatic mails to show only "human" messages helps editors to identify important messages in the article history. - Referee invitations:    - when inviting a referee, a warning is displayed to the editor if the referee is currently working on another paper    - referee activity page: information is now more relevant