Json Handler

Notes on usages:
 My reason for creating this handler is the several issues connected with using
  the php-json library for php. The main issue being the lack of predictability
  in the library, and the secondary issue the lack of proper exception handling.
  I asked myself why I wouldn't create the whole thing as a static class with
  static methods, and the answer came back "Because I dislike static classes which
  don't actually need to be static". This Json Handler is one of them. I like
  having a constructor to test if you have the proper library installed, and I
  like having to instance it in order to use it. If you disagree, feel free to
  remake it as a static class.
  
 It's worth mentioning that my decision to typecast all returns of the decode
  method to an array, was not made lightly. Arguments exist both for an against,
  but the argument i valued the most when i made the decision was that i wanted
  predictability. A lot of the time predictability is all you need in order to
  create good code going forward, and lack of predictability certainly causes
  more bugs than typecasting everything to an assoc array.
 
Questions and comments:
 Please feel free to direct any questions or comments to my email, or leave them
  in my git inbox. I wont promise ill answer all of them, but ill answer as many
  as i get around to.
  
Example:
    ---
    use Core/Json/JsonHandler;

    $json = {"test":{"info":"Ipsus catchus"},"more":null};
    $jsonHandler = new JsonHandler();
    $data = $jsonHandler->decode($json);
    ---