old_contents: def update_keys(keys):
      """Change keys we used to support to their new equivalent."""
      updated_keys = list()
      for key in keys:
          if key in translations:
              updated_keys += [translations[key]]
          else:
              updated_keys += [key]
      return updated_keys
  
  translations = dict(
      scl="colorscale",
      reversescale="reversescale"
  )
  
new_contents: def update_keys(keys):
      """Change keys we used to support to their new equivalent."""
      updated_keys = list()
      for key in keys:
          if key in translations:
              updated_keys += [translations[key]]
          else:
              updated_keys += [key]
      return updated_keys
  
  translations = dict(
      scl="colorscale",
      reversescl="reversescale"
  )
  
subject: Fix typo in reversescale translation