Many improvements.

Revive old auto posting blog thing that lives on VPS.
        Build out staging/ directory.
        Staging should automatically publish to VPS preview.
        Remove drafts/
        Unstaged content should automatically deploy to S3.
                ./lightning watch-deploy
                This needs to be rate-limited. Schedule deployment into the future
        Rename .md to .txt
                Do it for smus.com content too
        Handle generation errors (show the error in the generated HTML)
                If there's an error in the page, it's ignored.
                Write the errors to a json file.
                Render the JSON file if non-empty
        Change permalink structure for links to links/YYYY/MM/DD/slug.md