client.go
func (c Client) GetChannels() []string {
	var channels []string
	c.mutex.Lock()
	for k := range c.channels {
		channels = append(channels, k)
	}
	c.mutex.Unlock()
	return channels
}
func (c Client) GetChannels() []string {
	var channels []string
	c.mutex.Lock()
	for k := range c.channels {
		channels = append(channels, k)
	}
	c.mutex.Unlock()
	return channels
}
// GetChannels retrieves the IRC channels the client is on.