This provides a list of changes to the Breast Radiology specification since its initial release
2019-09-30 v0.1.0 - Breast Radiology Report (For Comment ballot 1) Ballot Candidate based on FHIR R4
2020-04-30 v0.2.0 - Breast Radiology Report (STU 1) Ballot Candidate based on FHIR R4