code: func (l Lvl) AlignedString() string {
  	switch l {
  	case LvlTrace:
  		return "TRACE"
  	case LvlDebug:
  		return "DEBUG"
  	case LvlInfo:
  		return "INFO "
  	case LvlWarn:
  		return "WARN "
  	case LvlError:
  		return "ERROR"
  	case LvlCrit:
  		return "CRIT "
  	default:
  		panic("bad level")
  	}
  }
docs: // AlignedString returns a 5-character string containing the name of a Lvl.