description, repository, issue_tracker and topics, plus a changelog,
which between them are most of a package's discoverability. The
repository URLs are a guess at the new home and want checking before the
first publish.
publish_to stays none so an accidental publish from inside this checkout
cannot succeed. Remove it in the new repository.
Version 0.1.0 rather than 0.0.1: a published version can be retracted
but never deleted, so the first one should mean something.
