Do not export functions unnecessarily

This project is intended only as a standalone application; not as a reusable packge. It only has a single package. For
this reason, there is no reason to export functions.

Author: per1234

Diff for: main.go

@@ -127,9 +127,9 @@ func main() {
 		var sketchData *bytes.Buffer
 
 		if *binMode {
-			sketchData = StreamToBytes(f)
+			sketchData = streamToBytes(f)
 		} else {
-			str := StreamToString(f)
+			str := streamToString(f)
 			re := regexp.MustCompile(`\r?\n`)
 			str = re.ReplaceAllString(str, "")
 			sketchData = bytes.NewBufferString(str)
@@ -228,14 +228,14 @@ func main() {
 	}
 }
 
-func StreamToBytes(stream io.Reader) *bytes.Buffer {
+func streamToBytes(stream io.Reader) *bytes.Buffer {
 	buf := new(bytes.Buffer)
 	buf.ReadFrom(stream)
 	return buf
 }
 
-func StreamToString(stream io.Reader) string {
-	return StreamToBytes(stream).String()
+func streamToString(stream io.Reader) string {
+	return streamToBytes(stream).String()
 }
 
 func getMyIP(otherip net.IP) net.IP {