add support for HTML underline tag <u> in addHtml#1186

zNightFalLz wants to merge 1 commit intoPHPOffice:developPHPOffice/PHPWord:developfrom

zNightFalLz:Add-underline-tag-support-to-addHtmlzNightFalLz/PHPWord:Add-underline-tag-support-to-addHtmlCopy head branch name to clipboard