code: def check_for_change(self):
          
          r = self.local_renderer
          lm = self.last_manifest
          last_fingerprint = lm.fingerprint
          current_fingerprint = self.get_target_geckodriver_version_number()
          self.vprint('last_fingerprint:', last_fingerprint)
          self.vprint('current_fingerprint:', current_fingerprint)
          if last_fingerprint != current_fingerprint:
              print('A new release is available. %s' % self.get_most_recent_version())
              return True
          print('No updates found.')
          return False
docs: Determines if a new release has been made.