          self.h = h  # pylint:disable=invalid-name
          self.landmarks_xy = landmarks_xy
          self.thumbnail = None
          self.mask = dict() if mask is None else mask
          self.hash = None
  
          self.aligned = None
          logger.trace("Initialized %s", self.__class__.__name__)
  
      @property
 
</s> remove         # Manual tool does not know the final hash so default to None
        self.hash = alignment.get("hash", None)
 </s> add  </s> remove         alignment = dict()
        alignment["x"] = self.x
        alignment["w"] = self.w
        alignment["y"] = self.y
        alignment["h"] = self.h
        alignment["landmarks_xy"] = self.landmarks_xy
        alignment["hash"] = self.hash
        alignment["mask"] = {name: mask.to_dict() for name, mask in self.mask.items()}
 </s> add         alignment = dict(x=self.x,
                         w=self.w,
                         y=self.y,
                         h=self.h,
                         landmarks_xy=self.landmarks_xy,
                         mask={name: mask.to_dict() for name, mask in self.mask.items()}) </s> remove     @staticmethod
    def get_faces(arguments):
        """ If faces argument is specified, load faces_dir otherwise return None """
        if not hasattr(arguments, "faces_dir") or not arguments.faces_dir:
            return None
        faces = Faces(arguments.faces_dir)
        return faces

 </s> add  </s> remove         self._alignments = self._get_alignments()
 </s> add 
          self.h = h  # pylint:disable=invalid-name
          self.landmarks_xy = landmarks_xy
          self.thumbnail = None
          self.mask = dict() if mask is None else mask

  
          self.aligned = None
          logger.trace("Initialized %s", self.__class__.__name__)
  
      @property
keep keep keep keep replace keep keep keep keep keep
 Update extracted faces to use PNG EXIF data (#1123)

Documentation
  - Update Usage.md, align.rst and image.rst
lib.image.py
  - read_image - Remove hash return, add metadata return
  - Remove read_image_hash functions
  - Add read_image_meta functios
  - Replace encode_image_with_hash with encode_image (to store metadata)
  - Add png meta reading and writing functions
  - Update Image Loaders/Savers to handle metadata rather than hashes
lib.training_data
  - Naming updates to remove references to hashes
lib.align.Alignments
  - Add versioning notes
  - Increment alignments version to 2.1
  - Deprecate hashing lookup functions
  - Replace filter_hashes with filter_faces
lib.align.detected_face
  - DetectedFace
    - Remove hash property
    - Add png header data serializing/deserializing functions
  - Mask
    - Add png header data serializing/deserializing functions
  - add update_legacy_png_header function to update png meta data
lib.cli.args - Deprecate alignments files for training
- plugins.train.trainer
  - Update alignments/mask code to read png header data
- scripts.convert
  - Aligned images folder - read data from png headers
- scripts.extract
  - Write png header information and no longer store hash of face
- tools.alignments
  - remove leftover-faces, merge and update-hashes jobs
  - Update jobs to use png meta data rather than hashes
- tools.manual
  - Update extract code to output png meta data and don't store hashes
  - Perform check on launch that tool is not pointing at a faces folder
tools.mask
  - Update to use png meta data
tools.sort
  - Update to use png meta data 
lib/align/detected_face.py