Fuzzing the seven pickle types

[AdamMutzell]

Regarding the scope in issue #10, create a fuzzer that can create the seven different types of objects that pickle can handle.

Create a function that will produce random

• [x] built-in constants (None, True, False, Ellipsis, and NotImplemented);
• [x] integers, floating-point numbers, complex numbers;
• [x] strings, bytes, bytearrays;
• [x] tuples, lists, sets, and dictionaries containing only picklable objects;
• [ ] functions (built-in and user-defined) accessible from the top level of a module (using def, not lambda);
• [ ] classes accessible from the top level of a module;
• [ ] instances of such classes whose the result of calling getstate() is picklable (see section Pickling Class Instances for details).

[AdamMutzell]

Removed the functions, since they were not easy to fuzz through hypothesis. They only fuzzed lambda functions

[AdamMutzell]

There seems to be no way to fuzz random functions, objects, or classes. I will close this issue and make new ones that focuses on unittests instead.