🤖 I have created a release beep boop

4.0.0 (2026-03-11)

⚠ BREAKING CHANGES

• transfer_manager: Blobs that would resolve to a path outside the destination_directory are no longer downloaded. While this is a security fix, users relying on the previous behavior to write files outside the target directory will see a change.

Features

• Add system test for cross-region buckets (810441c)
• Add time based benchmarks (09b1d9d)
• Add time based benchmarks (#1749) (09b1d9d)
• Triger bidi conformance tests (8dd0a80)
• Triger bidi conformance tests (#1757) (8dd0a80)

Bug Fixes

• Don't flush at every append, results in bad perf (ab62d72)
• Don't flush at every append, results in bad perf (#1746) (ab62d72)
• Init mp pool & grpc client once, use os.sched_setaffinity (a9eb82c)
• Init mp pool & grpc client once, use os.sched_setaffinity (#1751) (a9eb82c)
• Pass token correctly, '&' instead of ',' (d8dd1e0)
• Pass token correctly, '&' instead of ',' (#1756) (d8dd1e0)
• transfer_manager: Prevent path traversal in download_many_to_path (#1768) (700fec3)
• transfer_manager: Prevent path traversal in download_many_to_path (700fec3)

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