Update to manifesto v4.2.0

__tests__/fixtures/version-3/structures.json

__tests__/src/selectors/manifests.test.js

__tests__/src/selectors/searches.test.js

package.json

src/components/CanvasLayers.js

src/components/CollectionDialog.js

src/components/IIIFThumbnail.js

src/components/WindowSideBarCanvasPanel.js

src/components/WindowSideBarCollectionPanel.js

src/lib/MiradorCanvas.js

src/state/selectors/canvases.js

src/state/selectors/manifests.js

src/state/selectors/searches.js