v4.0.0b5

What's Changed

• Optimize performance of DataFrame string queries by @wudidapaopao in #468
• Enhance EmbeddedServer thread safety management by @wudidapaopao in #471
• Fix connection close issue by @auxten in #470
• Fix CI failure: test_query_in_thread (StorageURL incorrect distributed setup) by @wudidapaopao in #463
• Add _row_id virtual column for Pandas DataFrame by @wudidapaopao in #472
• Fix crash when closing connection by @wudidapaopao in #477

Full Changelog: v4.0.0b4...v4.0.0b5