code: def up_by_time(*filters, local_dir=".", remote_dir=DEFAULT_REMOTE_DIR, count=1):
      
      remote_files = command.map_files_raw(remote_dir=remote_dir)
      local_files = list_local_files(*filters, local_dir=local_dir)
      most_recent = sorted(local_files, key=lambda f: f.datetime)
      to_sync = most_recent[-count:]
      _notify_sync(Direction.up, to_sync)
      up_by_files(to_sync[::-1], remote_dir, remote_files)
docs: Sync most recent file by date, time attribues