https://github.com/HumanCellAtlas/query-service/commit/79d2df1d493dd2efe5da13fdb2a004e1e194eb54 broke CORS in API Gateway. An integration test assertion on CORS headers in `OPTIONS` responses would have helped detect this.
79d2df1 broke CORS in API Gateway. An integration test assertion on CORS headers in
OPTIONSresponses would have helped detect this.