0.81.0 (2020-08-31)

Features

• split users into human and machine (#470) (5abd5b0), closes #634 #638 #660 #661 #663 #664 #655 #633 #619 #636 #635 #627 #624 #591 #643 #645 #622 #626 #623 #629 #648 #650 #651 #649 #647 #652 #642 #657 #660 #661 #663 #664