          argument_list.append(dict(
              opts=("-j", "--job"),
              action=Radio,
              type=str,
              choices=("draw", "extract", "merge", "missing-alignments", "missing-frames",
                       "leftover-faces", "multi-faces", "no-faces", "remove-faces", "rename", "sort",
                       "spatial", "update-hashes"),
              required=True,
              help="R|Choose which action you want to perform. NB: All actions require an "
                   "alignments file (-a) to be passed in."
                   "\nL|'draw': Draw landmarks on frames in the selected folder/video. A subfolder "
                   "will be created within the frames folder to hold the output.{0}"
 
</s> remove                  "\nL|'merge': Merge multiple alignment files into one. Specify a space separated "
                 "list of alignments files with the -a flag. Optionally specify a faces (-fc) "
                 "folder to filter the final alignments file to only those faces that appear "
                 "within the provided folder."
 </s> add  </s> remove         argument_list.append(dict(
            opts=('-a', '--alignments'),
            action=FileFullPaths,
            filetypes="alignments",
            type=str,
            dest="alignments_path",
            group="data",
            help="Optional path to an alignments file. This is only used for the 'sort-by face' "
                 "method. If not provided, the default location will be scanned. If the file "
                 "still cannot be located, then the sorting process will analyze the full-head "
                 "extract images, which will lead to vastly inferior results."))
 </s> add  </s> remove         if self.args.job in ("missing-alignments", "missing-frames",
                             "multi-faces", "leftover-faces", "no-faces"):
 </s> add         if self.args.job in ("missing-alignments", "missing-frames", "multi-faces", "no-faces"): </s> remove                  "\nL|'leftover-faces': Identify faces in the faces folder that do not exist in "
                 "the alignments file.{2}{3}"
 </s> add  </s> remove             nargs="+",
 </s> add             type=str,
            choices=("draw", "extract", "missing-alignments", "missing-frames", "multi-faces",
                     "no-faces", "remove-faces", "rename", "sort", "spatial"),
          argument_list.append(dict(
              opts=("-j", "--job"),
              action=Radio,
              type=str,
            choices=("draw", "extract", "missing-alignments", "missing-frames", "multi-faces",
                     "no-faces", "remove-faces", "rename", "sort", "spatial"),
            choices=("draw", "extract", "missing-alignments", "missing-frames", "multi-faces",
                     "no-faces", "remove-faces", "rename", "sort", "spatial"),
            choices=("draw", "extract", "missing-alignments", "missing-frames", "multi-faces",
                     "no-faces", "remove-faces", "rename", "sort", "spatial"),
              required=True,
              help="R|Choose which action you want to perform. NB: All actions require an "
                   "alignments file (-a) to be passed in."
                   "\nL|'draw': Draw landmarks on frames in the selected folder/video. A subfolder "
                   "will be created within the frames folder to hold the output.{0}"
keep keep keep keep replace replace 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 
tools/alignments/cli.py