* JSON visitor are located in the format namespace
* Visitor are *real* visitor
* Visitable class has been renamed to Object
* Due to a bug in Visual Studio 2015, we move to VS2017
For PE binary it's now possible get the *imphash* value through the
lief.PE.get_imphash function. It's also possible to resolve ordinals
imports by using the lief.PE.resolve_ordinals
Resolve#54