v2.0.0

⚠️ Please read before updating — manual step required

SolsticeHub is the renamed successor of Solstice Season. Because the
Home Assistant domain changed, your existing devices cannot be migrated
automatically. After updating you must remove the old "Solstice Season"
integration and add "SolsticeHub" anew, then repoint your automations and
dashboards. Long-term statistics / history of the old entities are not
carried over. Details under Breaking Changes below.

✨ New Features

• Device types: when adding the integration you now choose which calendar
  you want:
  • Four Seasons – the familiar spring/summer/autumn/winter. Pick
    astronomical (seasons start at the equinoxes and solstices) or
    meteorological (fixed calendar dates), for either hemisphere.
  • Cross-Quarter / Celtic – the Celtic Wheel of the Year: eight seasonal
    festivals (Imbolc, Beltane, Lughnasadh, Samhain and the solstices/equinoxes)
    that fall midway between the seasons. Pick astronomical midpoints or
    traditional fixed dates, and system-language or Celtic names. (#7)
  • Chinese Solar Terms – the 24 solar terms of the traditional East Asian
    calendar, which divide the year by the sun's position. Pick all 24 terms or
    just the 8 major ones, with system-language, Pinyin or Hanzi names.
• Daylight trend on every calendar: daylight_trend and
  next_daylight_trend_change are now part of every device, alongside a
  diagnostic solar_longitude sensor (disabled by default).
• season_progress attribute on the current-season sensor.
• last_start attribute on the timestamp sensors — when the current period
  last began. (#4)
• Simpler setup: you pick the device type and name the device in Home
  Assistant's standard final step.

🐞 Bug Fixes

• Sensors now update exactly at each change (and at local midnight) instead of
  on a 24-hour timer from the last restart, so changes are reflected on time.
  (#6)

📝 Documentation

• For the complete v1.x release history (as Solstice Season), see
  RELEASENOTES_v1.md.

⚠️ Breaking Changes

The integration was renamed from Solstice Season to SolsticeHub. The
domain changed from solstice_season to solsticehub (and the repository moved
to SolsticeHub), so Home Assistant
treats it as a new integration and cannot migrate your configuration
automatically. A one-time manual switch is required:

1. (Optional) Note your current device type and options, and which automations
   or dashboards use the old entities.
2. Update to v2.0.0 (HACS shows it as an update of the same repository).
3. Remove the old Solstice Season integration: Settings → Devices & Services
   → Solstice Season → ⋮ → Delete.
4. Restart Home Assistant.
5. Add SolsticeHub: Settings → Devices & Services → Add Integration →
   SolsticeHub, then choose your device type and options.
6. Repoint your automations and dashboards to the new entities.

Your old entities' long-term statistics / history are not carried over.

Full Changelog: v1.5.1...v2.0.0