feature request: also track indirect calls

[dz0]

Hi,

is it possible, to show calls, which hide some intermediate functions?

Example:

def A(): B()
def B(): C()
def C(): print("hi")

A()

I'd like to hide B, but still show connection from A to C...

pycallgraph  -e "B" graphviz  -- test_pcg.py

but this shows A and C separately...