Fix #8 - no need to urlencode the url components itself.

appendUri constructs a new URI, which will urlencode the payload as needed

src/main/java/pro/javacard/nfc4pc/NFC4PC.java

@@ -52,7 +52,7 @@ public NFC4PC(OptionSet opts, Thread shutdownHook) {
 
             // by default there is timeout, unless run with -t 0
             if (secs > 0) {
-                idler = idle.schedule(() ->{
+                idler = idle.schedule(() -> {
                     System.err.printf("Timeout, no tap within %d seconds!%n", secs);
                     Runtime.getRuntime().removeShutdownHook(shutdownHook);
                     System.exit(2);
@@ -150,7 +150,8 @@ static URI transform(NFCTapData data, OptionSet opts) throws URISyntaxException
         if (opts.has(OPT_META_URL)) {
             target = appendUri(opts.valueOf(OPT_META_URL), "uid", uid2str(data.uid()));
             if (data.url() != null) {
-                target = appendUri(target, "url", URLEncoder.encode(data.url().toASCIIString(), StandardCharsets.UTF_8));
+                // NOTE: appendUri does urlencoding as it constructs a new URI from string components
+                target = appendUri(target, "url", data.url().toASCIIString());
             }
         } else if (data.url() == null && opts.has(OPT_UID_URL)) {
             // or UID, if url is empty