* Fix bug in snapshot generation - not handling case where content is sliced, base slicing detail is provided, and max slices = 1
* More work on validating existing snapshots
***NO_CI***
* Added text/cql.identifier media type to Measure validation
* Fix bug in QuestionnaireResponse rendering
* Validate based on ImplementationGuide.global
* add validation parameter -crumb-trails
* improve validation of StructureDefinitions
***NO_CI***
* Two significant bug fixes for the validator (thanks Mark Burnett from Babylon Health for finding them):
* The validator was not enforcing type restrictions when some profiles restricted elements with choices to a single type
* The validator was only creating warnings not errors for required bindings on some Quantities
* + Fix handling of infrastructural terminology failings on Codings - treat them as warnings not errors
* Add extra validation for value sets (check concept codes are valid)
* Add extra code to check derivation consisteny for SearchParameter resources
* More Improvements to Questionnaire Rendering
***NO_CI***
* Override extension methods in BackboneElement to look in modifierExtensions as well as extensions
* First draft of Profile Comparison tools (org.hl7.fhir.r5.comparison)
* Improved error messages when snapshot generation fails when slicing something that doesn't repeat
* Improvements for CDA round-tripping (XML esacping issues, xsi:type related issues, namespacing issues)
* Fix bug rendering DiagnosticReports with multiple categories
* adjust check on Attachment to only be an warning (when no meaningful content exists)
* add security check mode to Validator
***NO_CI***
markiantorno
Grahame Grieve
jamesagnew
Rob Hausam