What's Changed
* fix!: use correct representation of Coding object in mappings by korikuzma in https://github.com/cancervariants/therapy-normalization/pull/457
* fix!: `xrefs` should have `exactMatch` for `ConceptMapping.relation` by korikuzma in https://github.com/cancervariants/therapy-normalization/pull/460
* fix: resolve pydantic serializer warnings in `_add_merged_meta` by korikuzma in https://github.com/cancervariants/therapy-normalization/pull/461
**Full Changelog**: https://github.com/cancervariants/therapy-normalization/compare/0.7.1...0.8.0