Add MIT license to dataset card metadata

Rewrite dataset card: BART v-series naming, provenance narrative, lineage links

Update README.md

Update README.md

Add README + manifest

Add 23 shard(s): shard_00450.parquet..shard_00472.parquet

Add 50 shard(s): shard_00400.parquet..shard_00449.parquet

Add 50 shard(s): shard_00350.parquet..shard_00399.parquet

Add 50 shard(s): shard_00300.parquet..shard_00349.parquet

Add 50 shard(s): shard_00250.parquet..shard_00299.parquet

Add 50 shard(s): shard_00200.parquet..shard_00249.parquet

Add 50 shard(s): shard_00150.parquet..shard_00199.parquet

Add 50 shard(s): shard_00100.parquet..shard_00149.parquet

Add 50 shard(s): shard_00050.parquet..shard_00099.parquet

Add 50 shard(s): shard_00000.parquet..shard_00049.parquet

initial commit