## Validator Changes
* Improve error message for extensions without values
## Other code changes
* Add support for Requirements Resource (rendering + caching)
* Tidy up support for ActorDefinition
* Generate better summary for references
* Clean up bug checking data types in ContextUtilities
* Remove Validator dependency on GSON
* Upgrade validator to produce PSVI for tools to make use of
***NO_CI***
## Validator Changes
* Further support for validating CDSHooks content
## Other code changes
* Render period on Identifiers
* Render Tooling IG extensions in Profile table
* Fix NPE building CCDA IG
***NO_CI***
## Validator Changes
* Improved Errors for bad resource ids
* R5 ballot: Hack around discovered issues in the ballot
* Enforce value set & code system versioning when validating codes
* Enable bulk -snapshot and -convert on multiple/wildcard -source
* Fix bug revalidating profiled abstract types
## Other code changes
* Rework validator test cases to not have inter-test dependencies (+ fix up to allow contexts to be cloned)
* add First draft of xliff production
* Add ActorDefinition conversions R5 -> R4, R4B, R3
* Add support for validating logical model json files (not surfaced in CLI yet)
* Updates for changes to extension URLs in Tools IG
* Fix map rendering in value sets
* Fix broken link in R4 DeviceUseStatement
***NO_CI***
## Validator Changes
* Fix typos in error messages
## Other code changes
* Fix NPE in xig generation
* Fix bug in validator test framework (packages not being loaded properly)
* Remove references to terminology files no longer found in source specification
* Package generation enhancements for R4/R4B
* Support for CDS Hooks validation (not surfaced outside test cases yet)
***NO_CI***
## Validator Changes
* Fix R5 error around cnl-1
* Add markdown validation
* add support for http://hl7.org/fhir/StructureDefinition/structuredefinition-dependencies
* fix bugs in FHIRPath handling of polymorphism
* fix validation of Coding when system is unknown (align with CodeableConcept handling)
* Fix bug where extranous text in XML was reported in the wrong location
## Other code changes
* Fix links in bundle rendering
* Improvements to rendering for IG publisher (additional bindings)
* Bump jackson-databind dependency
* fix bugs in graphql generation
* populate StructureMap xhtml when loading from mapping language
* align markdown processing with FHIR-38714
***NO_CI***
## Validator Changes
* Warning in Validator CLI when character encoding is not UTF-8
* Don't validate contained resources against Shareable* profiles, and also check ShareableMeasure
## Other code changes
* Remove CapabilityStatement2 from canonical resources
***NO_CI***
## Validator Changes
* Validator support for -forPublication parameter
## Other code changes
* Improved ConceptMap rendering
* Internal reorganization of extensions
* Fix NPE rendering terminology resources
* Fix bad HTML rendering SearchParameter
* Allow rendering additional information in a comparison
* bug fixes from loading all published packages ever
***NO_CI***
## Validator Changes
* Support for R5 terminology
## Other code changes
* fix error with R5 IG constraint
* fix error with double escaping rendering code system markdown
* Suppress display when generating narrative for code systems if display matches code
* Fix bug in RDF generation in R4B
* fix bug in html parser - misses end of comments when end is --->
***NO_CI***
## Validator Changes
* no changes
## Other code changes
* Fix NPE ValueSetRenderer
* More fixes in StructureDefinition validation type characteristic
* Fix typo in ImplementationGuideDefinitionParameterComponent `Value`
***NO_CI***
## Validator Changes
* More fixing for Type Characteristics
## Other code changes
* Fix rendering of concept map code references
* Fix version conversion problem for MessageHeader.event
***NO_CI***
## Validator Changes
* no changes
## Other code changes
* Improved HTML compliance (img.alt)
* Improved example generation
* Improved handling of illegal parameters in ImplementationGuideDefinition
***NO_CI***
Grahame Grieve
markiantorno
Grahame Grieve
NSolooki
Lloyd McKenzie