v0.1.0

Added

• A routing table in the options: people (their notify services, their silence
  entities, their wake time) and targets (identifier, name, importance by
  default, watched alert.*, audience, presence rule, acknowledgement, snooze
  durations, default data, observer mode).
• notify.switchboard, plus one notify.switchboard_<slug> per target, so an
  alert: can name its target in notifiers:.
• Routing decides per person: audience, presence rule, silence, running snooze,
  a critical bypass and a refusal to call itself. Every drop carries a reason.
• Companion buttons: Acknowledge when the target watches an alert and allows
  it, and one Snooze n per configured duration. Acknowledging turns the
  alert off; a snooze survives a restart.
• Night deferral: a message that arrives while somebody is silenced is set aside
  and delivered at their wake time, correctly across midnight and across a
  daylight-saving change. One that came due while Home Assistant was down goes
  out at the next start, not a day later.
• Observer mode: watch a target's alert.* and route on its transitions without
  being listed in its notifiers:.
• Entities: binary_sensor.<person>_silenced,
  sensor.<person>_last_notification, sensor.<person>_active_snoozes,
  sensor.switchboard_routed_today, sensor.switchboard_dropped_today (with a
  reasons attribute), sensor.switchboard_deferred_today and
  event.switchboard_delivery. The counters reset at local midnight.
• Warnings for an unknown target and for an output that has been unusable —
  missing, or failing on every call — more than three times in a row.
• A diagnostics dump with message bodies and every default-data value redacted,
  plus the routing table, the snoozes, the deferrals and the last twenty
  decisions.
• Interface, warnings and button labels in English, French and Spanish.

Changed

• The notify.switchboard entity is the degraded path: it routes to the target
  used by default, with normal importance.
• Upgrading from 0.0.1 reuses notify.switchboard instead of leaving an
  unavailable entity beside a new notify.switchboard_2. Nothing to do by hand.