pola-rs/polars: Python Polars 0.17.8

🚀 Performance improvements

• less naive count (#8473)
• parallelise dataframe describe method (#8465)
• parallelize almost all flattens (#8468)
• optimize horizontal min/max (#8463)
• reinstate old behavior in numeric group-tuples (#8445)

• apply thousand-separators to "shape" html output, consi… (#8472)
• let duration string accept "1mo_saturating" (#8469)
• add dt.month_start and dt.month_end (#8435)
• add SQL support for cumulative functions (#8457)
• improve utility of dtype groups (#8453)
• improved parametric Decimal strategy (#8444)
• improved hypothesis/parametric testing profile registration (#8433)

• fix error message of offset_by if offsetting by negative number of months (#8464)
• fix sorted warning (#8462)
• improve utility of dtype groups (#8453)

• bubble up time_iter errors (#8467)
• additional test coverage for dtype groups (#8458)
• integrate live refresh/reload facility while writing docs (#8452)
• add a series of parametric/hypothesis example tests to the main testing docs page (#8454)
• parametric testing docs improvements (#8447)
• improved parametric Decimal strategy (#8444)
• improved hypothesis/parametric testing profile registration (#8433)

Thank you to all our contributors for making this release possible! @MarcoGorelli, @alexander-beedie, @ritchie46, @universalmind303 and @utkarshgupta137