Orders the bot to leave a channel
    Syntax: {command} <channel>

def cmd(send, msg, args):
    """Orders the bot to leave a channel
    Syntax: {command} <channel>
    """
    parser = arguments.ArgParser(args['config'])
    parser.add_argument('channel', nargs='+', action=arguments.ChanParser)
    try:
        cmdargs = parser.parse_args(msg)
    except arguments.ArgumentException as e:
        send(str(e))
        return
    for chan in cmdargs.channels:
        args['handler'].do_part(chan, args['nick'], args['target'], args['type'], send, args['handler'].connection)