JSON encoding

Hi,

please add JSON_UNESCAPED_UNICODE in next version. Without JSON_UNESCAPED_UNICODE is bad encoding in czech language.

Please change the function:

function cf7msm_set($var_name, $var_value) {
	if ( empty( $_COOKIE['cf7msm_check'] ) ) {
		$_SESSION[$var_name] = $var_value;
	}
	else {
		setcookie($var_name, json_encode( $var_value ), 0, COOKIEPATH, COOKIE_DOMAIN);
	}
}

to:

function cf7msm_set($var_name, $var_value) {
	if ( empty( $_COOKIE['cf7msm_check'] ) ) {
		$_SESSION[$var_name] = $var_value;
	}
	else {
		setcookie($var_name, json_encode( $var_value,  JSON_UNESCAPED_UNICODE), 0, COOKIEPATH, COOKIE_DOMAIN);
	}
}

Thank you very much
Regards
Marek S.