* 2021-01-11 1.4.0.1
  bugfix in chrony
* 2019-12-03 1.4
  add solaris ntp
* 2018-05-16 1.3
  more centrify, add darwin
* 2017-11-21 1.2
  use centrify as fallback for ntp/chrony
* 2017-11-20 1.1
  add centrify sntp sync
* 2017-11-16 1.0
  init
