- Added `city_detection_ip.py` for optimized location detection by coordinates and IP.
- Introduced caching for location results to improve performance.
- Updated `LocationHistoryView` to utilize new geolocation methods.
- Added `RegionInfoView` for retrieving region information based on IP and user agent.
- Included new dependencies `geoip2` and `geopy` in `requirements.txt`.
- Created GeoLite2 database files for city and country data.
- Updated URL patterns to include a new endpoint for region information.
