Close PyCQA/pylint#3032

Close PyCQA/pylint#1285

Because ``Const.itered`` was not returning proper nodes, pylint was failing
when trying to infer objects created from those nodes.

Close PyCQA/pylint#3306

These new capabilities will allow inferring both the `property` builtin
as well as property attributes such as  `.deleter` and `.setter`.

When inferring instances of classes from arguments, such as ``self``
in a bound method, we could use as a hint the context's ``boundnode``,
which indicates the instance from which the inference originated.
As an example, a subclass that uses a parent's method which returns
``self``, will override the ``self`` to point to it instead of pointing
to the parent class.

Close PyCQA/pylint#3157

We were able to infer exception instances as ``ExceptionInstance``
only for a handful of cases, but not all. ``ExceptionInstance`` has
support for better inference of `.args` and other exception related
attributes that normal instances do not have.
This additional support should remove certain false positives related
to ``.args`` and other exception attributes in ``pylint``.

Close PyCQA/pylint#2333

Certain stdlib modules use ``*args`` to encapsulate
the ``self`` parameter, which results in uninferable
instances given we rely on the presence of the ``self``
argument to figure out the instance where we should be
setting attributes.

Close PyCQA/pylint#3216