0.5.0

• Deprecated technology class and has technology slot
• Added has protocol slot to experiment class to capture protocol at the experiment level
• Added fields to track schema specific metadata
• Categorized slots as essential, recommended, and optional
• Added scripts for generation of use-case specific artifacts to support metadata submission
• Added scripts for generation of a relaxed schema to support metadata submission

0.4.0

• Added a restricted subset to the schema and tag slots that are
  restricted to be part of the restricted subset
• Added alias to all entities
• Added ega_accession to all relevant entities

0.3.0

• Simplified the definition of 'dataset' by combining slots from 'experiment dataset' and 'analysis dataset'
• Removed 'experiment dataset' and 'analysis dataset'

0.2.0

• Rearranged fields that are likely to be sparse and unnecessary for many of the entities
• Moved 'accession' slot to an 'accession mixin' that can be applied to only those entities that are likely to be assigned an accession
• Removed 'accession' slot from 'named thing' entity to avoid it being inherited by all of its descendant
• Created an 'ontology class mixin' to entities that are a proxy for ontology terms/concepts like anatomical entity, disease, phenotypic feature
• Removed 'has study slot from project entity to avoid circular references

0.1.0

• Restructured the schema
• Added new entities
• Added new properties for entities
• Added mappings to ontologies
• Added Pydantic models to the list of generated artifacts

0.0.1

• First release of the GHGA Metadata Schema