Features:
- serial: add support for flow control (#1126).
- Add gimbal protocol v2 (#1098).
Bugfixes:
- Stop all plugins when stopping server (#1125).
- hitl can be 1, or 2 when using the SIH (#1122).
- Unit tests for angle conversions and fix conversion (#1120).
- telemetry: fix local position health flag (#1100).
Enhancements:
- Add prefix to C API, because there is no namespacing (#1129).
- Improve libmavsdk_server API (#1128).
- tune: update proto to fix result (#1123).
- src: remove external_example (#1118).
Contributors:
@bkueng, @JonasVautherin, @julianoes, @romain-chiap
