[preprocessor, extractor] added the import in the __init__ file

bob/pad/face/extractor/__init__.py

@@ -7,6 +7,7 @@ from .FrameDiffFeatures import FrameDiffFeatures
 
 from .Chrom import Chrom 
 from .SSR import SSR 
+from .Li import Li 
 
 
 def __appropriate__(*args):

bob/pad/face/preprocessor/__init__.py

@@ -3,6 +3,7 @@ from .ImageFaceCrop import ImageFaceCrop
 from .FrameDifference import FrameDifference
 from .VideoSparseCoding import VideoSparseCoding
 
+from .CopyVideo import CopyVideo
 
 def __appropriate__(*args):
     """Says object was actually declared here, and not in the import module.