Changes touching this path

• a verb that takes no positionals stops being able to say so by claiming the opposite, because `NO_ARGS` now sits beside `NO_PATHS` and a census reads every verb invocation shape out of USAGE to find the ones still spelling nothing as open-ended — which is how `loot heads junk` was accepted 88 minutes after the same hole was closed at `loot cat`, and beside it `HEAD~n` ends where the revset lexer already ended it so a range can be typed at all (#1562) fb140e48 · dbf3dbe6…

Renames are not followed. loot's tree maps a path to an address, so a rename is a delete and an add. This list is the history of the name, not of the bytes.