This adds support for writing DateTime and DateTimeImmutable values with the XLSX writer. The dates are written using the date type (t="d") which must then specify an ISO date as the value (as opposed to a linear date in previous versions).
This adds support for writing DateTime and DateTimeImmutable values with the XLSX writer. The dates are written using the date type (t="d") which must then specify an ISO date as the value (as opposed to a linear date in previous versions).