Added support for
mergeCells:
// mergeCells (B2:G2), you may use CellHelper::getColumnLettersFromColumnIndex() to convert from "B2" to "[1,2]"
$writer->mergeCells([1,2], [6, 2]);
cell height:
$row->setHeight(30);
shouldShrinkToFit:
$style->setShouldShrinkToFit();
These changes are implemented for XLSX as that's what I need and test spout on.