dsdiff 0.1.0
First working release.
- diff: schema changes (added, removed, retyped columns), null-rate jumps, cardinality changes, and per-column distribution drift via PSI.
- profile: write a committable baseline profile with bin edges so a later diff measures drift against the same buckets.
- CSV, Parquet and JSON Lines input through polars.
- --json output and a --check CI gate.