Makes heavier use of generics to minimize code. Fixes some incorrect
types. Also reordered to allow easy comparison against class listings
and documentation.
It also improves the type checking of contained values. Some methods
were removed because they are implemented by a base class (i.e.,
*__iter__()*, *__str__()*, and *__contains__()*). *__hash__()* was
removed because arrays are unhashable types.
* Add new methods to socket stubs.
Also fix a couple of invalid types in recv*_into() socket methods.
* Add double-underscores to parameters for position-only arguments
