old_contents: __author__ = "John Kirkham <kirkhamj@janelia.hhmi.org>"
  __date__ = "$Apr 14, 2014 20:37:08 EDT$"
  
  __all__ = [
      "advanced_image_processing", "binary_image_processing", "denoising",
      # "neuron_matplotlib_viewer",
      "registration", "simple_image_processing", "wavelet_transform"
  ]
  
  import advanced_image_processing
  import binary_image_processing
  import denoising
  # import neuron_matplotlib_viewer
  import registration
  import simple_image_processing
  import wavelet_transform
  
new_contents: __author__ = "John Kirkham <kirkhamj@janelia.hhmi.org>"
  __date__ = "$Apr 14, 2014 20:37:08 EDT$"
  
  __all__ = [
      "advanced_image_processing", "binary_image_processing", "denoising",
      "filters",  # "neuron_matplotlib_viewer",
      "registration", "simple_image_processing", "wavelet_transform"
  ]
  
  import advanced_image_processing
  import binary_image_processing
  import denoising
  import filters
  # import neuron_matplotlib_viewer
  import registration
  import simple_image_processing
  import wavelet_transform
  
subject: Add `filters` to the list of imports.