Avoid using spaces when encoding without pretty print

[alvarolb]

When encoding the JSON string with the dump method, it will insert some spaces (after ":" or ",") even without pretty print active. It will add some undesired extra bytes when the data is just going over the wire. In my case it is important as I am encoding JSON Web Tokens (JWT), and every byte its important as the token is being transmitted in every request.

[nlohmann]

Good point! Those spaces should not be there. I'll fix it.

[mgerhardy]

@alvarolb are you using a library to generate the jwt stuff?

[alvarolb]

hi @mgerhardy, no, I am not using any special Library... just my own code with some libraries for the crypto part.