Polars: py-0.15.17 Release

✨ Enhancements

• allow expr in str.contains (#6443)
• Deprecate with_column (#6128)
• expose efficient iterator over DataFrame slices (#6414)
• add float formatting option (#6432)
• 10% speedup for to_dicts method (#6415)
• add datetime/duration dtype selector groups covering the different timeunits (#6425)
• allow internal api to get pointer to values buffer (#6385)
• infer ISO8601 datetimes (#6357)
• minor improvement to auto-detection of ambiguous data orientation (#6376)
• allow expressions as arguments in str.ends_with (#6361)
• Make groupby rolling/dynamic iterable (#6372)
• accept expr in str.starts_with (#6355)
• Move explode to namespaces (#6351)
• Rename Series.struct.to_frame to .struct.unnest (#6352)
• auto-detect %+ as tz-aware (#6434)

🐞 Bug fixes

• fix projection pushdown on double semi join (#6440)
• ensure column-exclusion works with the new dtype groups, and improve some related typing (#6442)
• ensure from_dicts and DataFrame init from list of dicts behave consistently, update/improve related docstrings (#6431)
• cumulative_eval ensure output dtype is respected (#6435)
• allow from pandas null structs (#6430)
• fixed interaction of schema_overrides with frame-init from list of dicts (#6424)
• only use float simd on specific alignment (#6427)
• no early escape when window is equal to len in rolling_float (#6408)
• is_between typing with time in start and end (#6393)
• dont incorrectly infer Zulu time (#6378)
• raise error on invalid sort_by argument (#6382)
• take offset into account with str.explode (#6384)
• Return empty batch for pl.read_csv_batched().next_… (#6381)
• ensure pyarrow.compute module is loaded (#6353)
• implement ser/de for StructChunked (#6359)
• series of empty structs (#6347)

🛠️ Other improvements

• add explicit note about use of Config as a context manager (#6439)
• ensure from_dicts and DataFrame init from list of dicts behave consistently, update/improve related docstrings (#6431)
• Fix docstring of series.interpolate (#6399)
• Remove duplicate test (#6390)
• deprecate columns param for DataFrame init; transitioning to schema (#6366)
• Add docs and tests to Expr.flatten (#6370)
• Example of filtering partitioned delta tables (#6365)
• Uppercase project URL refs (#6362)

Thank you to all our contributors for making this release possible! @ChayimFriedman2, @MarcoGorelli, @alexander-beedie, @c-peters, @flowlight0, @gab23r, @gam-phon, @ghuls, @jgmartin, @josh, @ritchie46, @romanovacca, @stinodego, @universalmind303 and @zundertj