v1.0

What's Changed

• Fixed wrongful results using hmac-256 and hmac-512 thanks to @ironhaven extensive researches within RFC's in #12

What's coming next

• The currently used "qrcode" library is abandonned. Preliminary work showed it was not compatible woth newer versions of the "image" library
• I'd like to take that opportunity to rethink the way the "qr" feature is presented