v0.5.0

What's Changed

• Add a Python package (adbc-driver-spanner) with PyPI trusted publishing by @fornwall in #18
• Implement partitioned execution (execute_partitions/read_partition) + Data Boost by @fornwall in #17
• Add a verified Python cookbook (pyarrow/polars/DuckDB/ingest) + LargeUtf8 bind by @fornwall in #19

Full Changelog: v0.4.0...v0.5.0