code: def jiggle_source_code(self):  # type: () ->int
          
          changed = 0
          for file_name in self.file_inventory.source_files:
              to_write = []
              # self.create_missing(file_name, file_name)
              if not os.path.isfile(file_name):
                  continue
  
              all_source = self.file_opener.read_this(file_name)
              if "__version_info__" in all_source:
                  logger.warning("We have __version_info__ to sync up.")
                  # raise TypeError()
  
              with self.file_opener.open_this(file_name, "r") as infile:
                  for line in infile:
                      leading_white = self.leading_whitespace(line)
                      version, version_token = dunder_version.find_in_line(line)
                      if version:
                          simplified_line = dunder_version.simplify_line(
                              line, keep_comma=True
                          )
                          if simplified_line.strip(" \t\n").endswith(","):
                              comma = ","
                          else:
                              comma = ""
  
                          if simplified_line.strip(" \t\n").startswith(","):
                              start_comma = ","
                          else:
                              start_comma = ""
  
                          to_write.append(
                              '{0}{1}{2} = "{3}"{4}{5}\n'.format(
                                  start_comma,
                                  leading_white,
                                  version_token,
                                  unicode(self.version_to_write()),
                                  comma,
                                  self.signature,
                              )
                          )
                      else:
                          to_write.append(line)
  
              check(self.file_opener.open_this(file_name, "r").read(), "".join(to_write))
              with open(file_name, "w") as outfile:
                  outfile.writelines(to_write)
                  changed += 1
          return changed
docs: Updates version of central package