code: function initAnomaly(opts0, logF) {
  	opts = haraldutil.merge(defOpts, opts0)
  	if (logF) log = logF
  }
docs: /*
  initialize anomaly reporting
  
  optsx: optional object
  .app: optional string: application name, default 'unknown'
  .noSubjectApp: boolean default false: email subject line does not contain app name
  .noSubjectHost: boolean default false: email subject line does not contain hostname
  .period: optional number, unit ms, default 24h: shortest time between emails
  .maxBuffer: optional number, default 100: max queued anomalies
  logF: optional function default console.log: log to use