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.
This PR adds support for cell alignment for XLSX and ODS files.
You can now align the content of the cells this way:
```
use Box\Spout\Common\Entity\Style\CellAlignment;
use Box\Spout\Writer\Common\Creator\Style\StyleBuilder;
$style = (new StyleBuilder())
->setCellAlignment(CellAlignment::RIGHT)
->build();
...
```
Possible cell alignments are: LEFT, RIGHT, CENTER and JUSTIFY.
