An export is given up on (never published, unreadable, or failing three
times) only while GDELT itself answers: its list of exports read, or
another export of the same round read. An outage that answers 404, or junk,
for everything now gives up on nothing, and a failing file earns one strike
a round rather than three within the first seconds' rounds.
Docs: News's share token is 9; territories without a country code are named
as themselves too; the changelog fragment credits one pull request. Unused
exports dropped from the rules and stale scaffolding from the ledger tests.