                   "\nL|'sort': Re-index the alignments from left to right. For alignments with "
                   "multiple faces this will ensure that the left-most face is at index 0 "
                   "Optionally pass in a faces folder (-fc) to also rename extracted faces."
                   "\nL|'spatial': Perform spatial and temporal filtering to smooth alignments "
                   "(EXPERIMENTAL!)"
                   "\nL|'update-hashes': Recalculate the face hashes. Only use this if you have "
                   "altered the extracted faces (e.g. colour adjust). The files MUST be named "
                   "'<frame_name>_face index' (i.e. how they are named after running extract)."
                   "{3}".format(frames_dir, frames_and_faces_dir, output_opts, faces_dir,
                                frames_or_faces_dir)))
          argument_list.append(dict(
              opts=("-a", "--alignments_file"),
              action=FilesFullPaths,
              dest="alignments_file",
              nargs="+",
 
</s> remove                  "multiple faces this will ensure that the left-most face is at index 0 "
                 "Optionally pass in a faces folder (-fc) to also rename extracted faces."
 </s> add                  "multiple faces this will ensure that the left-most face is at index 0." </s> remove             action=FilesFullPaths,
 </s> add             action=FileFullPaths, </s> remove             nargs="+",
 </s> add             type=str, </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                  "in your set and order them appropriately. NB: You should provide an alignments "
                 "file if using this method. Not doing so will lead to vastly inferior results."
 </s> add                  "in your set and order them appropriately."
                 "(EXPERIMENTAL!)".format(frames_dir, frames_and_faces_dir, output_opts, faces_dir,
                                          frames_or_faces_dir)))
                   "\nL|'sort': Re-index the alignments from left to right. For alignments with "
                   "multiple faces this will ensure that the left-most face is at index 0 "
                   "Optionally pass in a faces folder (-fc) to also rename extracted faces."
                   "\nL|'spatial': Perform spatial and temporal filtering to smooth alignments "
                 "(EXPERIMENTAL!)".format(frames_dir, frames_and_faces_dir, output_opts, faces_dir,
                                          frames_or_faces_dir)))
                 "(EXPERIMENTAL!)".format(frames_dir, frames_and_faces_dir, output_opts, faces_dir,
                                          frames_or_faces_dir)))
                 "(EXPERIMENTAL!)".format(frames_dir, frames_and_faces_dir, output_opts, faces_dir,
                                          frames_or_faces_dir)))
                 "(EXPERIMENTAL!)".format(frames_dir, frames_and_faces_dir, output_opts, faces_dir,
                                          frames_or_faces_dir)))
                 "(EXPERIMENTAL!)".format(frames_dir, frames_and_faces_dir, output_opts, faces_dir,
                                          frames_or_faces_dir)))
                 "(EXPERIMENTAL!)".format(frames_dir, frames_and_faces_dir, output_opts, faces_dir,
                                          frames_or_faces_dir)))
          argument_list.append(dict(
              opts=("-a", "--alignments_file"),
              action=FilesFullPaths,
              dest="alignments_file",
              nargs="+",
keep keep keep keep replace replace replace 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