v0.3.0

IMPORTANT: This release moves Nerves.Time to the NervesTime namespace. If
you are using the API, you will need to rename every instance of Nerves.Time
in your code to NervesTime.

• Bug fixes

  • ntpd crash detection and restart have been simplified by using
    MuonTrap.Daemon. This should fix an issue that was seen with ntpd not
    getting restarted after it crashed.
  • NervesTime.synchronized?/0 would return synchronized when changing NTP
    servers and right after restarting ntpd. It will return false now and
    switch to true when time really has been synchronized.

• Improvements

  • Simplified ntpd reporting code. No more regular expressions. Reports are
    sent via a Unix Domain socket and encoded as Erlang terms. This deleted a
    lot of string parsing code that felt brittle.
  • Added a restart delay on unclean ntpd restarts to prevent pegging public
    NTP servers. The delay is currently a minute since ntpd crashes are not
    well-understood. Luckily, this seems like a rare event.
  • Added more tests to cover NTP use