fixed an issue where the remote data state observable would only fire for the first time after the response had already returned

fixed an issue where if there is only one bitstream it would be returned as a single object and not an array in the item.bitstreams property

made use of embedded resources for relationships in the response that contain a single link for a set of resources rather than enumerate the self link of each resource

fixed an issue where sometimes the wrong resource would be returned if it was fetched as part of a list, and later queried as a single resource

fixed issues with related resources that have a single link for a hasMany relationship (e.g. item.bitstreams)