Simplified audio session options

• Simplified audio session options: options = [.allowAirPlay, .allowBluetoothA2DP]
• iOS minimum bumped to .iOS(.v15)

Migrate delegate callbacks to an observer pattern

Highlights

• API: Switched from delegate callbacks to an observer pattern (one-to-many). Implement FRadioPlayerObserver and call addObserver/removeObserver.
• Streams: Added support for non-live (file) streams with duration/currentTime updates, seeking, and more robust state handling.
• Packaging: SPM-only. Removed CocoaPods/Carthage files and Travis CI.
• Swift version: Bumped to Swift tools 5.5 (Xcode 13+).
• Demo app: Revamped SwiftUI-only demo (iOS 15+):
  • Reorganized into Views/Models/Resources; cleaner UI; uses AsyncImage for artwork.
  • Generated with XcodeGen (no .xcodeproj in repo).
• CI: Added GitHub Actions
  • spm.yml builds and tests the library.
  • demo.yml generates (XcodeGen) and builds the demo.

Migration notes (delegate → observers)

• Before (delegate, one-to-one):
  player.delegate = self
• Now (observers, one-to-many):
  player.addObserver(self) // conform to FRadioPlayerObserver
  // optionally: player.removeObserver(self)

Observer callbacks to implement

• radioPlayer(_:playerStateDidChange:)
• radioPlayer(_:playbackStateDidChange:)
• radioPlayer(_:itemDidChange:)
• radioPlayer(_:metadataDidChange:)
• radioPlayer(_:artworkDidChange:)
• radioPlayer(_:durationDidChange:)
• radioPlayer(_:playTimeDidChange:duration:)

✨Add HTTP header fields support

• Change AVAsset to AVURLAsset.
• Add httpHeaderFields property to set HTTP headers, example:

FRadioPlayer.shared.httpHeaderFields = ["user-agent": "FRadioPlayer"]

SwiftUI Example and Metadata improvements

• Add a new target with SwiftUI example for iOS and macOS 🚀
• Metadata retrieval improvements ✨

Big thanks to @urayoanm for adding this new features 🎸

Enhanced metadata validators

Improve the metadata validation by @nicolassrod ✨

Add metadata cleanup

Add a helper function to strip off trailing '[???]' characters left there by ShoutCast and Centova Streams.
Thanks to @cbarriga for this feature.

Swift 5 / Xcode 10.2

• Add Swift 5 and Xcode 10.2 support.
• Upgrade to Cocoapods 1.6.

Add tvOS support 📺

Add tvOS support by @sbrighiu 🎉

Fix Carthage

0.1.14

Update version

Add macOS support 🖥

Add macOS support by @misteral 🎉