Added

• Xlsx Writer Support for WMF Files #2339
• Use standard temporary file for internal use of HTMLPurifier #2383

Changed

• Drop support for PHP 7.2, according to https://phpspreadsheet.readthedocs.io/en/latest/#php-version-support
• Use native typing for objects that were already documented as such

Deprecated

• Nothing

Removed

• Nothing

Fixed

• Fixed null conversation for strToUpper #2292
• Fixed Trying to access array offset on value of type null (Xls Reader) #2315
• Don't corrupt XLSX files containing data validation #2377
• Non-fixed cells were not updated if shared formula has a fixed cell #2354
• Declare key of generic ArrayObject
• CSV reader better support for boolean values #2374
• Some ZIP file could not be read #2376
• Fix regression were hyperlinks could not be read #2391
• AutoFilter Improvements #2393
• Don't corrupt file when using chart with fill color #589
• Restore imperfect array formula values in xlsx writer #2343
• Restore explicit list of changes to PHPExcel migration document #1546