39059 Explain const values in MediaQuery test file

39085 Make inspector details subtree depth configurable.

39089 Correct InheritedTheme.captureAll() for multiple theme ancestors of the same type

39195 respect reversed scroll views

39252 Adds relayout option to CustomMultiChildLayout.

39282 Expose text metrics in TextPainter.

39354 Add IterableFlagsProperty and use it on proxy box classes

39428 Replace doc example text

39446 Add viewType to PlatformViewLink

39844 Fix curve for popping heroes

40099 Fix double.infinity serialization

40105 Ensure frame is scheduled when root widget is attached