listen(events) {
        events.on('post.published', this.sendForPost.bind(this));
        events.on('post.published.edited', this.sendForPost.bind(this));
        events.on('post.unpublished', this.sendForPost.bind(this));
        events.on('page.published', this.sendForPost.bind(this));
        events.on('page.published.edited', this.sendForPost.bind(this));
        events.on('page.unpublished', this.sendForPost.bind(this));
    }
Listen for new and edited published posts and automatically send webmentions. Unpublished posts should send mentions
 so the receiver can discover a 404 response and remove the mentions.
@param {*} events