The script used to identify and update the change is added into the GitHub
workflows script directory. A workflow action can be created to trigger the
script to update the headers on the first of every new year. Possibly a task for
a consequent PR.
outshine layer: Add "Features:" section to the README
outorg: use `a O` instead of `a o o` as a prefix
outshine: add transient state
outshine layer: (re)document keybindings, add imenu keybinding
outshine layer: fix outorg mode keybinding documentation
address review comments