Adding Volume and Coupling to DMM

[ErnestFistozz]

Can you please add the full implementation of the DMM?
Currently it has the 3 properties which are Size, Unit interface, Complexity.

Is it possible to add say maybe the Volume. According the the paper you reference in the docs, the volume can be defined as size (bytes) of the system/files.

I think the Coupling aspect can also be incorporated with measures such as depth of inheritance and a count of parameters referencing a type from another class or class attributes of a different type.