org.hl7.fhir.core/RELEASE_NOTES.md

Validator Fixes:

• Check that there are no nested block HTML elements in an HTML paragraph
• create a warning for UCUM annotations

Other Changes:

• Fix some issues when converting Allergy Intolerance 3 <-> 4
• Fix issues generating invsalid HTML
• Fix up FHIRPath to pass latest test cases
• Bundle rendering improvements
• Give code interface for control over validation rules
• add support for rendering choice groups (CDA)