Yet another of @nyanbinary s bots, this one as a bit of a compendium piece to me looking into CVE references ( https://blagh.nyanbinary.de/categories/cve-meta/ ). This bot has not yet been fully implemented but two functions are planned: * [Implemented] Check references newly added to CVEs for availability & post one that is (immediately) not available - expect this to run ~hourly but post rarely. * [Planned] Check references in historical CVE records (limiting myself to those published in the last 3 years) on availability & post newly unavailable domains (2 strikes) - expect this to run ~weekly.