PUBLIC MARKS with tags fluffy & atom

The bazillion feed formats issue is a non-issue here, nor is the eight ways to specify an author name, nor is the seemingly endless creative ways in which people seem to misuse RFC 822 formatted dates; all that remains as an unaddressed issue is the cleansing of the HTML. In terms of this diagram, that simply means that html5lib needs to shift from the left to the right, and Spider is no longer necessary.