add the more recent logs and pigs

So it turns out the blog posts that are missing have all been deleted in 7f7b56f, so there's no use restoring them from the rss feed because we could just partially revert that.
I converted these from html using pandoc and manually touched them up, but I'm not able to compile anything so I'm not sure if it'll work (pandoc renders them to html just fine, though). They might be missing some metadata.
Also, this doesn't include recent edits on older posts, but I'm not sure if there have been any.