Moves every live relation of OLD onto NEW (Surfex.Record.move/5): for each, a
retire of the old relation and a relate of the same type with NEW in its place.
mix surfex.move "spec.md#Carts/Adding items" "spec.md#cart-add"
mix surfex.move "spec.md#Totals" "spec.md#Carts/Totals" --note "moved under Carts"
mix surfex.move code:MyApp.Design.render/2 code:MyApp.Design.render/3Use it when a heading is renamed, an anchor added, a section moved, or a function
renamed or its arity changed. The moved end
keeps the version recorded for OLD, so a move never confirms anything: if the text
changed as it moved, the relation dangles until you confirm it. mix surfex.suggest
proposes moves it can see (the same version under a new id).
A retired relation comes across as retired, with its reason, unless NEW already has
that relation: a rename is no reason to forget a decision.
Moving a test (a renamed module, describe or file) also carries its red_green and
baseline records, when its version is unchanged. Any it leaves behind are listed: the
test changed, so it earns them again.