docs: Add no-defensive-code guideline to `AGENTS.md` (#38)

docs: Add `Summary.to_json()` (#33)

feat: Add machine-readable digest of comparison (#28)

docs: Add examples for all methods (#24)

chore: Add dedicated `PrimaryKeyError` (#17)

fix: Properly set separating lines in summary (#6)

Initial commit

Co-authored-by: Marius Merkle <marius.merkle@quantco.com>
Co-authored-by: Ege Karaismailoglu <ege.karaismailoglu@quantco.com>