Fhir Models Versions Save

Prevent the hash used to instantiate a model from being modified by the model constructor.

Remove inspect call from method_missing for performance reasons.

adds an #each_element method to FHIR::Model so that resources can be easily iterated over. (https://github.com/fhir-crucible/fhir_models/pull/89)

Updates the published gem's metadata to include license information to support dependency license scanning.

Minor fix to FHIRPath engine.

• Fix invalid ValueSet expansions.
• Rename FluentPath to FHIRPath
• Upgrade models to FHIR R4 v4.0.1

• Allow initialization of resources with a single FHIR::Model instance as the element value
• Explicitly require JSON
• Update validation for quantity and coding terminology

Dependency updates.

Update to FHIR R4.

Upgrades ported from fhir_dstu2_models to bring feature and API parity to the two libraries. Updates are primarily associated with profile validation.