Analysis release 2.3.0

Added 🚀

• Friends and parts on leaf edges: a leaf edge says friend from a C++ class to a class it declares its friend,
  and part_of from a part of a type written in another file, such as a C++ source file's member functions, to the
  type.

Fixed 🐞

• Cycles between files of the dependency map: declarations that share a name in different files no longer close
  cycles that the edges cannot follow, and a cycle through a type split over several files is found.