Array validator.

This validator allows validating serialized (or deserialized) array parameter values. A valid array is a serializable/deserializable list of (str, int, float, bool, array).

Usage: Let validator = ListValidator(), then * validator.validate([5.5,3]) -> [5.5,3] * validator.validate('[5.5,3]') -> [5.5,3] * validator.validate('[5.5,3,["foo","bar"]]') -> [5.5,3,["foo","bar"]] * validator.validate('[5.5,3,{"foo":1.2}]') -> [5.5,3,{"foo":1.2}] * validator.validate('foo') -> ValueError * validator.validate(True) -> ValueError * validator.validate('false') -> ValueError * validator.validate('5.5') -> ValueError * validator.validate('{"foo":1.2}') -> ValueError