Narwhals v1.14.1

Changes

✨ Enhancements

• feat: Adding ewm_mean (#1298)
• feat: add Series|Expr.rolling_sum method (#1395)

🐞 Bug fixes

• fix: remove rogue "t" in ColumnNotFoundError (#1398)

🛠️ Other improvements

• ci: add plotly to downstream tests (#1376)
• ci: prevent ibis from setting upper bounds (where possible) (#1399)

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