Issues
- [IIIF/api#526 auth from Presentation #526)
- [IIIF/api#547 auth for image resources rather than Image API services #547)
Manifests
- http://library-uat.wellcomelibrary.org/iiif/b17564980/manifest (first occurrence in full)
- https://raw.githubusercontent.com/tomcrane/iiifauth/gh-pages/scratch-manifests/auth-in-manifest-explicit.json (up front but misleading)