Narwhals

Changes

🚀 Performance improvements

- perf: use fastpath in with_columns (307)

Thank you to all our contributors for making this release possible!
MarcoGorelli

Changes

✨ Enhancements

- enh: series and expr round method (306)
- enh: `slice`, `starts_with`, `tail` methods for `str` namespace (305)

🛠️ Other improvements

- ci: issue template correction (303)

Thank you to all our contributors for making this release possible!
DeaMariaLeon, FBruzzesi and MarcoGorelli

Changes

- Expression String Method - Contains (300)

📖 Documentation

- docs: Update docs for with_columns (304)

🛠️ Other improvements

- ci: Removed conflicting github release (298)

Thank you to all our contributors for making this release possible!
DeaMariaLeon, MarcoGorelli, marenwestermann and ugohuche

Changes

✨ Enhancements

- enh: `.head()` and `.tail()` (297)
- enh: dataframe and series `.item()` (296)

📖 Documentation

- clean: format docstrings with ruff (294)
- docs: Contributing steps update (293)

🛠️ Other improvements

- test: nox for local testing (295)

Thank you to all our contributors for making this release possible!
DeaMariaLeon, FBruzzesi and MarcoGorelli

Changes

✨ Enhancements

- feat: `strftime` for datetime namespace (291)

Thank you to all our contributors for making this release possible!
FBruzzesi and MarcoGorelli

Changes

🚀 Performance improvements

- perf: use copy=False in set_axis where possible (https://github.com/narwhals-dev/narwhals/pull/275)

✨ Enhancements

- feat: add DataFrame.write_parquet (https://github.com/narwhals-dev/narwhals/pull/289)
- feat: implement series arithmetic (https://github.com/narwhals-dev/narwhals/pull/288)

📖 Documentation

- docs: add overhead section (https://github.com/narwhals-dev/narwhals/pull/283)

Thank you to all our contributors for making this release possible!