[Geary] Disabling Mark as Read Automatically

[Axel U <ulrich axel gmail com>]

Geary marks emails as read the moment the are selected.  I have not found the ability to disable that in Geary. I would like to completely manually control marking a message as read.  While a workaround is to mark a given message as unread again, it would be a nice preference setting to be able to disable the automatic mark as read all together.

Axel