Fixup rebase
Add support for unordered list items in auto-list
Remove whitespace
Remove support for `destroy:composer`
Replace `isEmpty` check
Remove support for uneditable sub-content
Refactor shortcuts logic
Refactor “delete image and author” quirk
Cleanup `Composer::observer`
Prevent default if the commit key was space
Only remove the list element if it’s the first child of the list.
Sharpen list breaking logic
Only substitute text if text was inserted