42404 Add isDismissible configuration for showModalBottomSheet

42482 Only dismiss dropdowns if the orientation changes, not the size.

42554 Fix route focusing and autofocus when reparenting focus nodes.

42613 Fix Tooltip implementation of PopupMenuButton

42683 Optimize focus operations by caching descendants and ancestors.

42779 Fix chip ripple bug — No longer two ripples

42811 Add a Focus node to the DropdownButton, and adds an activation action for it.

42936 Support AppBars with jumbo titles

43213 Add focus nodes, hover, and shortcuts to switches, checkboxes, and radio buttons.

43422 trivial fixed AboutListTile having an empty icon placeholder when no icon set.