v1.0.1

• [ENH] Features for issue Issue 8 - Callbacks and Handlers when no document was found
• Changed minimum PHP-Version to 7.4
• Breaking Change in ZugferdMailHandlerAbstract - Signature of handleDocument was changed from

abstract public function handleDocument(
  ZugferdMailAccount $account, 
  Folder $folder, 
  Message $message, 
  Attachment $attachment, 
  ZugferdDocumentReader $document, 
  int $recognitionType);

to

abstract public function handleDocument(
  ZugferdMailAccount $account, 
  Folder $folder, 
  Message $message, 
  Attachment $attachment, 
  ?ZugferdDocumentReader $document, 
  ?int $recognitionType);