Gridcraft is not comparable with Excel.

For starters it is not localised, the English months are hardcoded in the source.

https://github.com/storytold/gridcraft/blob/main/crates/engi...

> const MONTHS: [&str; 12] = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];

The functions crate has ZERO tests for its functions.

https://github.com/storytold/gridcraft/tree/main/crates/func...