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+# Changelog
+
+## [1.0.1] - 2026-05-25
+
+### Added
+- Initial public release: NREL Solar Position Algorithm (SPA) port to Dart
+- Exports: `calcSpa`, `formatTime`, `SpaFormattedResult`, `SpaFormattedAnglesResult`
+- Exports: `spaZa`, `spaZaInc`, `spaZaRts`, `spaAll`
+- 48 tests passing
+- Pure Dart implementation