Feature request: certificate validity, test chain only?

[sindarina]

Am wondering whether it'd be possible and/or within scope to add a 'valid for X days' to the tool, as well as an option to test the certificate only, including the chain (trusted/untrusted) without doing the full scan. As far as I can tell all the data that would be needed is already being gathered, and a simple certificate test would reduce the need for custom tools to do fill the gap?

Thanks!