code: func (cl *ChannelLogger) Reset() {
  	cl.RWMutex.Lock()
  	defer cl.RWMutex.Unlock()
  	cl.ch.Close()
  	cl.ch = channels.NewRingChannel(cl.ch.Cap())
  }
docs: // Close the existing channel halting goroutines that are draining the channel
  // and create a new channel to buffer into. Should not cause any log lines
  // arriving concurrently to be lost, but any that have not been drained from
  // old channel may be.