ntpstats 3.2.0

New daemons and protocols as sources (#21). No breaking changes.

Added

• ntpd-rs as a live source: ntpstats watch ntpd-rs samples ntp-ctl -f prometheus status,
  or the metrics exporter's URL (--command-override http://127.0.0.1:9975/metrics). Each sample
  is the inverse-variance mean of the per-source offsets ntpd-rs 1.x exports, with the number of
  sources, the best source's uncertainty and delay, and the system root delay, dispersion and
  stratum. The 2.0 pre-releases no longer export per-source offsets; watch says so. Also in the
  web UI's Live workspace.
• CSPTP in captures: client-server PTP (sdoId 0x300, as in ntpd-rs 2.0 and statime) is read
  from pcap/pcapng files as one series per client/server pair. Every exchange gives all four
  timestamps; transparent-clock corrections are removed in both directions; the PTP-timescale
  offset is inferred; the CSPTP status TLV gives the grandmaster and steps removed. These messages
  are no longer mistaken for master/slave flows.
• ntpstats.sources.parse_prometheus_text, a reader for the Prometheus/OpenMetrics text format.
• Tests built from the example lines of the chrony 4.9 documentation (measurements, tracking,
  statistics): columns and signs match the parsers.

Changed

• Docs: the prom page notes that ntpd-rs offset metrics are those of the 1.x series.

Stable API changes since 3.1.0

• None. Code written against the stable API of an earlier release keeps working.