What's Changed
- make sure the session terminates by @victortive in https://github.com/flutter-webrtc/dart-sip-ua/pull/485
- Hold and video upgrade fixed by @mikaelwills in https://github.com/flutter-webrtc/dart-sip-ua/pull/503
- sip_ua_helper: add sendOptions by @eschmidbauer in https://github.com/flutter-webrtc/dart-sip-ua/pull/476
- Update callscreen.dart by @HVaidehi in https://github.c...