Python Polars 0.19.1

💥 Breaking changes

• empty product returns identity and product ignores nulls (#10842)

✨ Enhancements

• add binary, boolean, categorical, date, object, and time selectors (#10806)
• Supports is_last operation (#10760)
• minor typing improvement for DataFrame.__iter__ (#10825)
• Add custom error for allow_copy=False (#10822)

🐞 Bug fixes

• empty product returns identity (#10842)
• never panic in hash/equality doesn't hold in cse (#10836)
• Improve bound checks on temporal ranges (#10837)
• var/std behavior around few elements (#10828)
• Fix divided by zero error when read empty csv in streaming mode (#10819)
• behaviour of reversed(df) (#10823)
• fix equality of quantile aggregation node (#10816)
• Reading an only-header csv file in streaming mode should not panic (#10810)

🛠️ Other improvements

• Refactor range related functions (#10830)
• map-related docstring updates (#10779)
• Move sink tests to streaming module (#10821)

Thank you to all our contributors for making this release possible!
@alexander-beedie, @orlp, @reswqa, @ritchie46 and @stinodego