Staging of blog updates
- Symlink generated output to next_release/
- Run ./release.shto movenext_release/toreleased/andreleased/toprev_release/
- Run ./release.sh --rollbackto revert toprev_release/
  Time-delay safety feature — ./release.sh will no-op until next_release/ is an hour old.
  Can then run this from a cron job and there's a window to catch issues before they are publicly visible.
  This will also effectively batch RSS/JSON feed updates to be kind to readers.