# Aliases: retired ids and what they became. A save that names a renamed
# hull, module, material, band, gate, faction, structure or paint opens with
# the new id. Systems keep their ids; a renamed system is a new system.
#
# [[alias]]
# old = "ministry_pea_shooter"
# new = "ministry_autocannon"
#
# Core's rows and a pack's (packs/<id>/content/aliases.toml) write both ids
# in full (union:old_drill). An alias names an id that is gone: one that
# still exists is refused, and so is a chain or a dead end; point straight
# at the id that stands today. Core has retired nothing yet.