- Add IsAiring field to track airing status of anime
- Improve GetAnimeDataByID to fetch and handle airing status
- Fix completion logic for currently airing shows

- Add parallel processing of source URLs with goroutines
- Implement rate limiting (50ms) to prevent API overload
- Add timeout handling (10s) for request completion
- Maintain result order using ordered collection
- Add error handling and partial result recovery
- Improve logging for better debugging

- Logfile is a global variable, no need to specify it in every call
- Anime is an global variable any function can use it without being passed