Bugs: ArrayList (0.28.1) #38

Defects in ArrayList / NullableArrayList (0.28.1; each one reproduced). Fixed by the new lists.py (ArrayList[E]); every item gets a regression test and is ticked when the fix lands.

• C33 ArrayList instances are unhashable: hash() raises TypeError although __eq__ is value-based and isinstance(x, Hashable) is True.
• C34 ArrayList aliases the caller's list and exposes it mutably: validated invariants can be broken after construction.
• C35 ArrayList(Int)([Int(1)]) is rejected although the elements are instances of the element type.
• C36 With a non-VO element type, ArrayList coerces instead of validating: ArrayList(int)(['1', 2.7, True]) is accepted.
• C37 Element validation runs after _validate, so subclasses see unvalidated elements (TypeError instead of ValueObjectError).
• C38 List VOs cannot be pickled (generated classes are function-local), unlike every other VO.
• C39 typing.get_type_hints fails on generated list classes (annotation list[cls] refers to a closure variable).
• C40 The factory accepts and caches any element "type", including None or non-callables; the error appears only with a non-empty list.
• C41 NullableArrayList(X)() has no None default, unlike every other nullable VO, and its _validate repeats the parent's check.
• C48 The ArrayList suites skip the hash/equality tests every other suite has, hiding C33 and C34.