0.1.0

Added

• Initial release.
• Async Downloader that fetches the FAA ACD .xlsx and scrapes the EUROCONTROL APD detail pages.
• Parser that ingests the downloaded data and assembles one AircraftProfile per ICAO type designator.
• Domain-restricted enums for every fixed-value field (no open String types).
• Measurement<Unit> computed properties for every physical quantity.
• AsyncProgress actor for tracking parse progress.
• SwiftACDError with localized error descriptions.

Changed

• Adopted the Approachable Concurrency upcoming-feature flags (NonisolatedNonsendingByDefault, InferIsolatedConformances). The nonisolated async APIs (Parser.parse, Downloader.downloadACD/downloadAPD/downloadAll) run on the caller's executor by default instead of hopping to the global concurrent executor.
• Raised the minimum deployment targets to macOS 15, iOS 18, tvOS 18, watchOS 11, and visionOS 2, and moved shared-state synchronization to Synchronization.Mutex.