Added possibility od defining own Heading detection regular expression in Word2007 document reader #2233
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Description
This pull request adds a feature which allows to set own regular expression for Headings detection in
\PhpOffice\PhpWord\Reader\Word2007\AbstractPart::getHeadingDepth(). This is useful for Word documents produced in non-English versions of the software where default styling naming convention differs, resulting in all heading-styled elements becoming regular paragraphs in PHPWord. One can set this in php-word.ini file globally or usePhpOffice\PhpWord::setHeadingDepthRegexp()anywhere in applicationChecklist:
composer run-script check --timeout=0and no errors were reported (there is one complaint on \PhpWord\Element\TOC.php which has already been there)