5.9 RC56

This release focuses a lot of changing the internal use of XML to favor Json and more objects in general. There are a few updates to implement more json usage, this also includes the updating of a lot of the functions and plugins. These changes, triggered additional changes and revamping on certain areas in the core system, removes some older code that wasn't absolutely necessary. This release also includes updates for the callback system. The callback allows built-in and custom callbacks.