Support multiple page sequences in ranges

Diva currently supports the IIIF Presentation API 3.0. However, when obtaining the canvases in a manifest, Diva looks for either an array in a `sequences` array in the manifest or an `items` array in the manifest (see https://github.com/DDMAL/diva.js/blob/5f530483f653db68af1cbb92bc8cc967b51763c3/source/js/parse-iiif-manifest.js#L70). In the Presentation API 3.0, the `Ranges` attribute is used to provide these ordering structures (https://iiif.io/api/presentation/3.0/#54-range), and there are no `sequences.` Diva's logic will still work with the 3.0 API because it will use the ordering of canvases found in the manifest's `items` array, but will not show a different ordering if defined (because this will be defined in a `range`.

For more information about this change, see https://iiif.io/api/presentation/3.0/change-log/#141-remove-sequence-in-favor-of-ranges-items-and-behavior-value-sequence