release 2.8.16

• Changes
  • additional tests get var -> const/let medicine #2122
  • move connection states into haraka-constants #2121
  • lint: remove useless escapes #2117
  • lint: switch no-var to error #2109
  • rspamd: repackaged as NPM module #2106
  • dsn: repackaged as NPM module haraka-dsn #2105
  • outbound: add results when queueing #2103
  • spamassassin: skip adding headers when value is empty #2102
  • Replace console.log with stdout #2100
  • update js-yaml to version 3.10.0 #2097
  • repackage p0f plugin to NPM #2076
  • ES6: replace var with const or let #2073
• Fixes
  • daemon cwd #2126
  • updated fcrdns plugin name passed to results #2115
  • tls: only apply default key/cert paths when undefined #2111
  • dkim_verify: fix formatting of auth results #2107
  • smtp_forward: consistently use queue.wants #2107
  • haraka was adding TLS header on non-TLS connection #2103
  • dkim typo fix #2101
  • fix rfc2231 parsing code to cope with continuation #2089