Compatibility with both direct_mail v5.2 (TYPO3 v8) and v6.0 (TYPO3 v9) to ease your migration.

BEWARE OF THIS BREAKING CHANGE: your custom methods "getWizard()" should now accept an additional $row parameter of type array right after the reference to $PA (and before $checkOnly). In addition, you may need to rework a bit your custom JS as TYPO3.jQuery is not available anymore, even in TYPO3 v8, and should be replaced by the standard $.