This latest update allows you to complete all tasks on a list in one command. The operation can be undone using the undo (restore, revert) command:
You: "Hey Mycroft, complete my grocery list"
Mycroft: "3 tasks on list grocery was marked complete"
You: "Hey Mycroft, restore"
Mycroft: “I have restored 3 tasks on list grocery again”
And one bug was crushed:)