chore: release v0.8.0

[lmarkmann]

API breaking changes detected in celsius.

--- failure constructible_struct_adds_field: struct exhaustively constructible through public API adds field ---

Description:
A pub struct that could be exhaustively constructed with a literal using only public API has a new pub field, breaking existing exhaustive literals.
        ref: https://doc.rust-lang.org/reference/expressions/struct-expr.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.50.0/src/lints/constructible_struct_adds_field.ron

Failed in:
  field Sun.strength in /tmp/.tmpZulBhf/celsius/src/scene.rs:58
  field HourlyArrays.rain in /tmp/.tmpZulBhf/celsius/src/weather/forecast.rs:95
  field HourlyArrays.showers in /tmp/.tmpZulBhf/celsius/src/weather/forecast.rs:98
  field HourlyArrays.precipitation_probability in /tmp/.tmpZulBhf/celsius/src/weather/forecast.rs:104
  field HourlyArrays.cape in /tmp/.tmpZulBhf/celsius/src/weather/forecast.rs:107
  field HourlyArrays.direct_normal_irradiance_instant in /tmp/.tmpZulBhf/celsius/src/weather/forecast.rs:110
  field HourlyArrays.aerosol_optical_depth in /tmp/.tmpZulBhf/celsius/src/weather/forecast.rs:117

Breaking

• HourlyArrays.time and DailyArrays.time, sunrise and sunset are i64 unix seconds instead of local ISO strings; HourlyArrays gains rain, showers, precipitation_probability, cape, direct_normal_irradiance_instant and aerosol_optical_depth; Sun gains strength; compose_at no longer fails on a timestamp it cannot parse.

Added

• Available forecast window is now dependent the current hour (instead of 12 AM of the day) and implemented quantitive changes to let the OpenMeteo forecast and reflect the amount of sunshine that passes through clouds (#92)

[codspeed]

Merging this PR will not alter performance

✅ 74 untouched benchmarks
⏩ 10 skipped benchmarks¹

---

_{Comparing release-plz-2026-09-06T19-44-41Z (c78ae45) with main (c6abb9e)}

Footnotes

1. 10 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩