py-1.20.0

## ⚠️ Deprecations

- Make parameter of `str.to_decimal` keyword-only (#20570)

## 🚀 Performance improvements

- Extend functionality on BitmapBuilder and use in Growables (#20754)
- Specialize first/last agg for simple types in new-streaming engine (#20728)
- Use PyO3 to convert between Python and Rust datetimes (#20660)
- Improve state caching and parallelism of window functions (#20689)
- Broadcast without materialization in `concat_arr` (#20681)
- Cache rolling groups (#20675)
- Use downcast\_ref instead of dtype equality in `<dyn SeriesTrait as AsRef<ChunkedArray<T>>` (#20664)
- Fix performance regression for DataFrame serialization/pickling (#20641)
- Make Parquet `verify_dict_indices` SIMD (#20623)
- Move to `zlib-rs` by default and use `zstd::with_buffer` (#20614)
- Skip filter expansion in eager (#20586)
- Improve unique pred-pd (#20569)

## ✨ Enhancements

- Allow different python versions for pickle (#20740)
- Add SQL support for the `NORMALIZE` string function (#20705)
- Add 'allow\_exact\_matches' join\_asof' (#20723)
- Add new-streaming first/last aggregations (#20716)
- Add Parquet Sink to new streaming engine (#20690)
- Make automatic use of Azure storage account keys opt-in (#20652)
- Reduce scan\_csv() (and friends') memory usage when using BytesIO (#20649)
- Improve `GroupsProxy/GroupsPosition` to be sliceable and cheaply cloneable (#20673)
- Add `str.normalize()` (#20483)
- Allow more group\_by agg expressions in the new streaming engine (#20663)
- Support loading Excel Table objects by name (#20654)
- Support writing to file objects from `write_excel` (#20638)
- Raise `DuplicateError` if given a pyarrow Table object with duplicate column names (#20624)
- Support writing partitioned parquet to cloud (#20590)
- Add hint to error message for extra struct field in JSON (#20612)
- Add `index_of()` function to `Series` and `Expr` (#19894)
- Update `sqlparser-rs`, enabling "LEFT" keyword to be optional for anti/semi joins in SQL queries (#20576)
- Add `cat.starts_with`/`cat.ends_with` (#20257)

## 🐞 Bug fixes

- Avoid blocking on async runtime when resolving cloud scans (#20750)
- Fix `allow_invalid_certificates` being ignored in `storage_options` (#20744)
- Incorrect output type for `map_groups` returning all-NULL column (#20743)
- Fix `unique(maintain_order=True)` raising `InvalidOperationError` for null array (#20737)
- Don't collapse into a Nested Loop Join if the cross join maintains order (#20729)
- Don't serialize credentials provider (#20741)
- Fix `Series.n_unique` raising for list of struct (#20724)
- Fix incorrect top-k by sorted column, fix `head()` returning extra rows (#20722)
- Add outer validity to AnyValueBufferTrusted for structs (#20713)
- Don't partition group-by with non-scalar literals in agg (#20704)
- Fix xor operation of selector with Expr (#20702)
- Incorrect view buffer dedup (#20691)
- Only verify Parquet ConvertedType if no LogicalType is given (#20682)
- Validate length of `schema_overrides` in `read_csv` (#20672)
- Fix `map_elements` ignoring `skip_nulls=True` for struct dtype (#20668)
- Check for MAP-GROUPS in cloud-eligible (#20662)
- Fix empty output of `to_arrow()` on filtered unit height DataFrame (#20656)
- Add `.default` to azure credential provider scope URL (#20651)
- Fix `join_asof` panicking for invalid `tolerance` input (#20643)
- Incorrect flag check on is\_elementwise (#20646)
- Don't panic but set null type if type is unknown (#20647)
- Fix performance regression for DataFrame serialization/pickling (#20641)
- Fix `Int128` dtype serialization (#20629)
- Ensure `read_excel` and `read_ods` support reading from raw `bytes` for all engines (#20636)
- Ensure that SQL `LIKE` and `ILIKE` operators support multi-line matches (#20613)
- Properly broadcast in sort\_by (#20434)
- Properly load nested Parquet Statistics (#20610)
- AWS environment config was not loaded when credential provider was used (#20611)
- Fix order observability of group-by-dyn (#20615)
- Soundness when loading Parquet string statistics (#20585)
- Fix error filtering after `with_columns()` on unit height LazyFrame (#20584)
- Propagate `tenant_id` to `CredentialProviderAzure` if given (#20583)
- Restore symbols on Apple by bumping nightly version (#20563)
- Fix type annotation of `str.strip_chars_*` methods (#20565)
- Fix variable name in error message for "unsupported data type" in rolling and upsampling operations (#20553)

## 📖 Documentation

- Add more information for cross joins (#20753)
- Fix typo in sql functions (cosinus -> cosine) (#20676)
- Add links to `read_excel` "engine\_options" and "read\_options" docstring (#20661)
- Fix small typo in plugins (polars-dt -> polars-st) (#20657)
- Add polars-h3 and polars-st to plugin list (#20653)
- Add docs reference for `Field` (#20625)
- Update `DataFrame` join examples (#20587)
- Miscellaneous minor updates/fixes (#20573)
- Update "group\_by\_rolling" (deprecated) to "rolling" in user guide (#20548)

## 📦 Build system

- Update to official release of PyO3 0.23.4 (#20683)
- Officially support Python 3.13 (#20549)

## 🛠️ Other improvements

- Fix remote benchmark script (#20755)
- Fix tests (#20745)
- Simplify hive predicate handling in `NEW_MULTIFILE` (#20730)
- Add tests for various open issues (#20720)
- Fixes an Excel test following new `fastexcel` release (#20703)
- Add tests for various open issues that have been fixed (#20680)
- Don't include debug symbols in benchmark run (#20571)
- Implement CSV, IPC and NDJson in the `MultiScanExec` node (#20648)
- Don't rely on argument order of optimization\_toggle (#20622)
- Fix Python deps installation in remote-benchmark workflow (#20619)
- Fix flaky categorical test (#20591)
- Bump multiversion from 0.7 to 0.8 (#20543)
- Remove unused nested function in `LazyFrame.fill_null` (#20558)
- Improve bin size info (#20551)

Thank you to all our contributors for making this release possible!
@Jesse-Bakker, @MarcoGorelli, @MoizesCBF, @SamuelAllain, @alexander-beedie, @bschoenmaeckers, @coastalwhite, @eitsupi, @etiennebacher, @itamarst, @jqnatividad, @lukemanley, @mcrumiller, @nameexhaustion, @orlp, @ritchie46 and @stinodego