Option to AND/OR aggregation filters crit

[quoininc-huudatran]

Option to select AND/OR for aggregation filters.

[quoininc-huudatran]

If there are 3 conditions, how do you represent all combinations? It should all "And" or all "Or". I really have a hard time imagining someone searching for "a given sector or a given author". I would wait for feedback from users.