Version 1.3.0 - Swift 6 Compatible

Release Highlights:
- Swift 6 compatibility with improved concurrency safety
- Thread-safe task management
- Xcode 26+ compatibility (resolves performAndWait conflict)
- Memory leak prevention with [weak self]
- Native NotificationCenter.notifications() support
- Enhanced Sendable compliance

Breaking Changes:
- Renamed performAndWait to performAndWaitWithResult to avoid conflicts with Xcode 26+ system API

Migration Guide:
See README.md for detailed migration instructions