2019.01: Href.Cool Updates

Webmentions and five new links.

@kicks Excellent additions. You are a good guide.

@johnjohnston Huffduffed? Wild! What happens to the links after they get huffduffed? Do they materialize into ad-hoc minotaurs? The mind reels.

@kicks heh, johnjohnston on Huffduffer delightful service to create a sort of ad-hoc podcast.