Group command: batch-add items
Currently, the only way to add items to groups is individually, via !item "name" group "group". Update the !group command to support batch item-adds, as:
!group "group" add "item 1" "item 2" ...
Currently, the only way to add items to groups is individually, via !item "name" group "group". Update the !group command to support batch item-adds, as:
!group "group" add "item 1" "item 2" ...