• Renewal jobs now have their own log attached with timestamps when renewal was started,
  ran into errors, finished. The job JSON files are copied from staging into the domain
  directory for possible later review.
• job logs now list all activities during renewal.
• new MDMessageCmd added as alternative to MDNotifyCmd. This command is called with an
  addition "reason" parameter that specifies what happened to the manged domain.
• MDNotifyCmd is now called for each domain that has been successfully renewed. Not for
  all Managed Domains after all have been processed. This gives notifications earlier.
  Notification errors are now also collected under MD status and notifications are retried
  with backoff delays.
• New directive MDServerStatus to control if Managed Domains are listed in Apache's
  server-status handler or not. Default yes.
• New directive MDCertificateStatus to control if JSON certificate information on a domain
  should be made available on https:///.httpd/certificate-status or not. Default yes.
• fixed a bug that checked ACMEv2 authorizations against the server several times unnecessarily.