Logging binary data

[remoosey]

I stumbled upon that adding binary data to the log makes the header added be completely blank. Turns out it dies on the json_encode of binary data. The easy fix was to utf8_encode it:
`
protected static function _log($type, array $args)
{
// nothing passed in, don't do anything
if (count($args) == 0 && $type != self::GROUP_END) {
return;
}

    $logger = self::getInstance();

    $logger->_processed = array();

    $logs = array();
    foreach ($args as $arg) {
        $logs[] = $logger->_convert(utf8_encode($arg)); //added to fix logging binary data
    }
    
    $backtrace = debug_backtrace(false);
    $level = $logger->getSetting(self::BACKTRACE_LEVEL);

    $backtrace_message = 'unknown';
    if (isset($backtrace[$level]['file']) && isset($backtrace[$level]['line'])) {
        $backtrace_message = $backtrace[$level]['file'] . ' : ' . $backtrace[$level]['line'];
    }

    $logger->_addRow($logs, $backtrace_message, $type);
}

`

Should probably be done for the other logging alias methods (error, warn, etc).
Should I do a pull request with this? Seems very minor. Thanks!