v0.17.0 - Introduce new scheduling policy to grab origins without last update - journal_client: Disable origins when too many visited attempts failed - journal_client: Record last_visited and last_successful in origin_visit_stats - Add a specific cooldown for notfound origins - Add a (longer) specific cooldown for failed origin visits - Make the origin visit scheduling cooldown configurable - Various refactoring to simplify the grab next visits logic and updates