grotere buffer voor scanner

NU/cmd/metadata/metadata.go

@@ -77,6 +77,7 @@ func doText(filename string) {
 	x(err)
 	defer func() { x(fp.Close()) }()
 	scanner := bufio.NewScanner(fp)
+	scanner.Buffer(nil, 1000000)
 	for scanner.Scan() {
 		line := scanner.Text()
 		if !strings.HasPrefix(line, "##META") {