docstr: Upgrade the settings from a previous revison
docstr_tok: ["Upgrade","the","settings","from","a","previous","revison"]
code: def upgrade_settings(
      self, setting_values, variable_revision_number, module_name
  ):
      """Upgrade the settings from a previous revison"""
      if variable_revision_number == 1:
          setting_values = setting_values + ["Yes", 5, 30]
          variable_revision_number = 2
      return setting_values, variable_revision_number
  
imports: import matplotlib.cm
  import numpy
  from cellprofiler_core.constants.measurement import COLTYPE_INTEGER, M_LOCATION_CENTER_X, M_LOCATION_CENTER_Y, M_NUMBER_OBJECT_NUMBER, FF_COUNT, COLTYPE_FLOAT, IMAGE, C_COUNT, C_LOCATION, C_NUMBER, FTR_CENTER_X, FTR_CENTER_Y, FTR_OBJECT_NUMBER
  from cellprofiler_core.measurement import Measurements
  from cellprofiler_core.module import Module
  from cellprofiler_core.object import Objects, ObjectSet
  from cellprofiler_core.preferences import get_default_colormap
  from cellprofiler_core.setting import Binary
  from cellprofiler_core.setting.subscriber import ImageSubscriber
  from cellprofiler_core.setting.text import LabelName, Integer, Float
  from centrosome.cpmorphology import all_connected_components
  from centrosome.cpmorphology import fixup_scipy_ndimage_result
  from centrosome.cpmorphology import get_line_pts
  from scipy.ndimage import binary_erosion, binary_fill_holes
  from scipy.ndimage import mean
label_desc: Use image node_id 15 for calling the IdentifyDeadWorms obj's underlying member method code with example usage: obj.upgrade_settings(setting_values, variable_revision_number, module_name) and returns: setting_values,  variable_revision_number