Set document properties with UTF-8 Encoding (for accents)

[csrnontol]

e.g. when $objPHPExcel->setTitle("Reporte de Categorías"), in the exported file the property is stored as "Reporte de Categorías". The same thing happens with setDescription(), setLastModifiedBy() and similar methods. No problem occurs when storing utf8 chars in the cells, the only issue is for file properties.

PHPExcel version: 1.8
PHP version: 7.2.4