IMS LTI 2.1 is about to go to public draft. At that point there will be interoperability testing and certification testing and final tweaks to the spec. This JIRA will be used to make those changed. It will be kept open until Sakai passes LTI 2.1 certification.
This adds a property:
This suppresses extensions that break XSD errors. In particular, we match the Canvas comment extension in LTI 1.1 but it extends the XML beyond the XSD.