fix + bug

[JHthe4]

The URL does not contain a Base64-URL enoded string, so URLLib will parse it wrong ("+" is parsed into " "). This quick and dirty patch fixes that.

[ss23]

Thanks for the bug fix! Do you think that using https://docs.python.org/3/library/base64.html#base64.urlsafe_b64decode instead would be a better fix, @JHthe4? I think that'll solve other characters that aren't right, too.

[JHthe4]

You would think so, but unfortunately the URL in the QR code isn't even encoded correctly (at least it wasn't in my case). It contained both / and + characters, but the / was parsed correctly. So the alternative would be to do two replacements earlier, and then parse the string with the function you specified. In my opinion, this would be more hacky than just fixing the one problem with the + sign. It's up to you though, both ways are a relatively simple fix.