org.hl7.fhir.core/RELEASE_NOTES.md

Validator Changes

• Improved Error messages when code is not in value set

Other code changes

• Move HTTP logging to a sub-directory of temp
• Default to text log not HTML log for terminology logging, and don't spuriously escape the text log
• Use JSON not XML by default when using R4 terminology service
• Add support for R6 final version
• Bump HAPI to 6.4.1