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gh-150285: Fix too long docstrings in the zstd module (GH-150291)
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
GH-136975: Emend a spelling error (algorthm -> algorithm) (#136999)
gh-139877: Use PyBytesWriter in pycore_blocks_output_buffer.h (#139976)
gh-150583: Fix zstd compression level with digested ZstdDict (#150586)
gh-148286: Fix UB in `ZstdDecompressor.unused_data` when a frame is decompressed in one call (#153258)