v2.0.0

Upgrade for ajv v8
Support migration from draft-04 to draft-2020-12

v1.1.0

Do not change definitions to $defs when migrating schema to draft-2019-09 - see explanation

v1.0.0

Support JSON Schema draft-04 migration to draft-07 or draft-2019-09

v1.0.0-beta.0

Migrate JSON Schema draft-04 to draft-07 and draft-2019-09