old_contents: from .neural._classes.batchnorm import BatchNorm
  from .neural._classes.layernorm import LayerNorm
  from .neural._classes.resnet import Residual
  
new_contents: from .neural._classes.batchnorm import BatchNorm
  from .neural._classes.layernorm import LayerNorm
  from .neural._classes.resnet import Residual
  from .neural._classes.feature_extracter import FeatureExtracter
  from .neural._classes.function_layer import FunctionLayer
  from .neural._classes.feed_forward import FeedForward
  
  
subject: Add alias for FeatureExtracter to thinc.misc