Polars 1.38.1

✨ Enhancements

• Add get() to retrieve a byte from binary data (#26454)
• Remove with_context in SQL lowering (#26416)

🐞 Bug fixes

• Do not overwrite used names in cluster_with_columns pushdown (#26467)
• Do not mark output of concat_str on multiple inputs as sorted (#26468)
• Fix CSV schema inference content line duplication bug (#26452)
• Fix InvalidOperationError using scan_delta with filter (#26448)
• Alias giving missing column after streaming GroupBy CSE (#26447)
• Ensure by_name selector selects only names (#26437)
• Restore compatibility of strings written to parquet with pyarrow filter (#26436)
• Update schema in cluster_with_columns optimization (#26430)
• Fix negative slice in groups slicing (#26442)
• Don't run CPU check on aarch64 musl (#26439)
• Fixed annotations shadowed by class methods (#26356)
• Remove the POLARS_IDEAL_MORSEL_SIZE monkeypatching in the parametric merge-join test (#26418)
• Fix selector match patterns for multiline column names (#26320)

📖 Documentation

• Add sink_delta to API reference (#26446)

🛠️ Other improvements

• Cleanup unused attributes in optimizer (#26464)
• Use Expr::Display as catch all for IR - DSL asymmetry (#26471)
• Ignore pytz in mypy (#26441)
• Remove the POLARS_IDEAL_MORSEL_SIZE monkeypatching in the parametric merge-join test (#26418)
• Cleanup the parametric merge-join test (#26413)

Thank you to all our contributors for making this release possible! @Voultapher, @alexander-beedie, @azimafroozeh, @cmdlineluser, @dependabot[bot], @dsprenkels, @hamdanal, @kdn36, @nameexhaustion, @orlp, @ritchie46 and dependabot[bot]