Fix &key to support the full syntax (((KEY VAR) DEFAULT SUPPLIED), etc.)
and add &allow-other-keys. Make a breaking change to &key
to use &allow-other-keys and to stop being permissive.
Add &optional with the full syntax ((VAR DEFAULT SUPPLIED), etc.)
Add &map with full syntax taking from map-elt ((KEY VAR DEFAULT))
&keyto support the full syntax (((KEY VAR) DEFAULT SUPPLIED), etc.) and add&allow-other-keys. Make a breaking change to&keyto use&allow-other-keysand to stop being permissive.&optionalwith the full syntax ((VAR DEFAULT SUPPLIED), etc.)&mapwith full syntax taking frommap-elt((KEY VAR DEFAULT))