Narwhals v1.15.2

Changes

• patch: fix dtypes rendering (#1481)

✨ Enhancements

• feat: raise informative error message for DataFrame.eq/neq (#1494)
• feat: add Series.__contains__ (#1480)
• feat: improve invalid concat error message (#1491)

🐞 Bug fixes

• fix: nw.Series could not be pickled (#1488)
• fix: Set level correctly for lazy-only implementations (#1478)

🛠️ Other improvements

• chore: Remove unused code in pandas like series (#1489)
• chore: rename _change_dtypes to _change_version (#1490)
• chore: rename validate_column_comparand utility functions, add pep740 badge (#1477)

Thank you to all our contributors for making this release possible!
@FBruzzesi, @MUKESHRAJMAHENDRAN, @MarcoGorelli