Polars: py-1.26.0 Release

🚀 Performance improvements

• Use views for binary hash tables and add single-key binary variant (#21872)
• Avoid rechunking in gather (#21876)
• Switch ahash for foldhash (#21852)
• Put THP behind feature flag (#21853)
• Enable THP by default (#21829)
• Improve join performance for expanding joins (#21821)
• Use binary_search instead of contains in business-day functions (#21775)

✨ Enhancements

• Add support for io-plugins in new-streaming (#21870)
• Add PartitionParted (#21788)
• Minor improvements to EXPLAIN plan output (#21822)
• Add explain_all (#21797)
• Allow to use repeat_by with (nested) lists and structs (#21206)

🐞 Bug fixes

• Fix DataFrame.nan_to_null work for tuple (#21861)
• Allow pivot on empty frame for all integer index dtypes (#21890)
• Null panic on decimal aggregate (#21873)
• Join with categoricals on new-streaming engine (#21825)
• Fix div 0 partitioned group-by (#21842)
• Incorrect quote check in CSV parser (#21826)
• Add option to use relative paths for plugin libraries (#21675)
• Respect header separator in sink_csv (#21814)
• Deprecation of streaming=False (#21813)
• Fix collect_all type-coercion (#21810)
• Memory leaks in SharedStorage (#21798)
• Make None refer to uncompressed in sink_ipc (#21786)

📖 Documentation

• Add sources and sinks to user-guide (#21780)

🛠️ Other improvements

• Change dynamic literals to be separate category (#21849)
• Add POLARS_TIMEOUT_MS for timing out slow Polars tests (#21887)
• Disable --dist loadgroup in pytest (#21885)
• Fix refcount assert being messed up by pytest assertion magic (#21884)
• Add env vars to configure new-streaming buffer sizes (#21818)

Thank you to all our contributors for making this release possible! @Kevin-Patyk, @MarcoGorelli, @alexander-beedie, @anath2, @borchero, @coastalwhite, @dongchao-cn, @kgv, @mcrumiller, @nameexhaustion, @orlp and @ritchie46