Features
* Incorporate the use of Narwhals selectors to select multiple columns for validation by rich-iannone in https://github.com/rich-iannone/pointblank/pull/45
* View a report for a single validation step with the new `get_step_report()` method by rich-iannone (https://github.com/rich-iannone/pointblank/pull/31, https://github.com/rich-iannone/pointblank/pull/42, https://github.com/rich-iannone/pointblank/pull/43, https://github.com/rich-iannone/pointblank/pull/44, https://github.com/rich-iannone/pointblank/pull/47, https://github.com/rich-iannone/pointblank/pull/48)
Fixes and Documentation
* When collecting target table schema, avoid conversion to Narwhals (use native DF schemas) by rich-iannone in https://github.com/rich-iannone/pointblank/pull/40
* Corrected installation instructions in the contributing guide by malcolmbarrett in https://github.com/rich-iannone/pointblank/pull/41
* Fix issues with `n_failing()` correctness (when Null values present) by rich-iannone in https://github.com/rich-iannone/pointblank/pull/46
* Added the Examples page on the project website by rich-iannone (https://github.com/rich-iannone/pointblank/pull/32, https://github.com/rich-iannone/pointblank/pull/33)
New Contributors
* malcolmbarrett made their first contribution in https://github.com/rich-iannone/pointblank/pull/41
**Full Changelog**: https://github.com/rich-iannone/pointblank/compare/v0.4.0...v0.5.0