org.hl7.fhir.core/RELEASE_NOTES.md

Validator Changes

• Clean up the -extension parameter - make implementation conistent with documentation
• Stop auto-converting parameters to strings for string functions e.g. .length() in the FHIRPath engine
• Add parameter -implicit-fhirpath-string-conversions for old FHIRPath string conversion functionality

Other code changes

• Fix NPE counting descendents when validating
• Fix bug processing invalid HTTP response