v3.15.0b1
gh-132983: Fix docstrings in ``ZstdDict`` (#137321)
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-146578: _zstd: Fix printf format for pledged size errors (#146576)
gh-148651: Fix refcount leak in _zstd decompressor options (#148657)
GH-137623: Use an AC decorator for docstring line length enforcement (#137690)