v4.0.1

Fixes

• Dragging no longer makes the drag preview lag behind the pointer: hovers reach the store at most once per animation frame, and only rows whose drop highlight changes re-render. (The internal tree.state.nodes.drag.destinationParentId / destinationIndex fields moved to tree.state.dnd; use tree.dragDestinationParent / tree.dragDestinationIndex instead.) (#385)