Happy Birthday, SAML

Happy 10th birthday, SAML2.0!
https://www.oasis-open.org/standards#samlv2.0
Still massively useful to us and our communities, also thanks to the
many things built on top of and since the release of the spec,
e.g. MetaIOP, MDUI, MDRPI, MetadataAlg, Entity Attributes, etc.
-peter