CameraView: only request microphone permission when CaptureMode is se… …t to Video in UWP (#1963) CameraView: only request microphone permission when CaptureMode is set to Video Co-authored-by: Gerald Versluis <gerald.versluis@microsoft.com>

Fix random crash on iOS when switching source (#1899) 

Implemented MediaElement ObjectDisposedException fix (#1870) Implemented fix

fix the code formatting indentation error (#1851) 

Cleanup pipeline (#1845) * Cleanup pipeline, fix uwp package * Add missed constant * Remove redundant directives

Preview 14 (#1834) 

Update azure-pipelines.yml 

[Android] Fix a11y set semantic focus (#1782) * Add SemanticExtensions SetFocus and Announce * Add Windows Announce implementation * Update based on feedback * Fix SetSemanticFocus for Android * Revert order of usings to clean up diff Co-authored-by: Brandon Minnick <13558917+brminnick@users.noreply.github.com> Co-authored-by: Javier Suárez <javiersuarezruiz@hotmail.com> Co-authored-by: Gerald Versluis <gerald.versluis@microsoft.com>

[Bug] [Fixed] #1712 (#1713) 

update azure-pipelines