v1.4.0: update dsd_certificate_public.crt

v1.4.0: update DATASET_SPECIFICATION_signed.pdf

v1.4.0: update LICENSE_per_source.md

v1.4.0: update DATA_DICTIONARY.md

v1.4.0: update STATS.md

v1.4.0: update README.md

v1.3.0: update SAMPLES.md

v1.3.0: update LICENSE.md

v1.3.0: update STATS.md

v1.3.0: update DATA_DICTIONARY.md

v1.3.0: update MANIFEST.json

v1.3.0: update sample.jsonl

v1.3.0: update README.md

add Snowflake Marketplace listing link in dataset card

add DATASET_SPECIFICATION_signed.pdf

add STATS.md

add DATA_DICTIONARY.md

add LICENSE_per_source.md

add MANIFEST.json

add sample.jsonl

add README.md

initial commit