Process also function references

[dolik-rce]

Would it be possible to process also function references for kotlin?

Function can be "used" not only by direct call, but also by passing a reference to it (e.g. ::myFunction or value::myFunction). From the point of user, who want's to see a dependency graph of the functions, this would be worth to see too.

Other than this one slight deficiency, this tool works very well and greatly surpassed my expectations. Good job!