31064 Add sorting to flutter version command (cla: yes, tool)

31073 Fuchsia step 1: add SDK version file and artifact download (cla: yes, tool)

31074 make flutterProject option of CoverageCollector optional (cla: yes, tool)

31088 Text field scroll physics (cla: yes, f: cupertino, f: material design, framework)

31092 Add null checks to coverage collection (cla: yes)

31093 Make the matchesGoldenFile docs link to an explanation of how to create golden image files (cla: yes, framework)

31097 Fix text field selection toolbar under Opacity (cla: yes, framework)

31109 Clarify various CupertinoTabView docs (cla: yes, f: cupertino, framework)