• Status lists private key specification, if different from default RSA(2048).
• Status shows list of MDs sorted alphabetically.
• Status now shows message from a failed renewal with information and error code on where/why
  it failed.
• At startup, an initial ACME parameter check is performed. More details are given when
  ACME challenge methods are unavailable as to the cause. server-status list these per MD.
• Adding challenge type 'tls-alpn-01' to ACMEv1 as well.
• server-status columns compressed. Expiry/Valid timestamp given as dates only for better
  readability. Full time as tooltip.
• Renewal jobs properties are persisted after each run. This preserves status and schedules
  when switching child processes by mod_watchdog. It also allows server-status to provide
  more information about ongoing activities.
• Cleanup of post config work to make the dry-run phase faster and avoid double loadings
  of MD data from the file system.
• Splitting out certificate driving in separate source. Logging errors/warnings about
  MDomains that can not be renewed once at post config.