Log Message:
py-astroid: updated to 2.2.0

What's New in astroid 2.2.0?
* Fix a bug concerning inference of calls to numpy function that should not \ 
return Tuple or List instances.
* typed_ast gets installed for Python 3.7, meaning type comments can now work on 3.7.
* Fix a bug concerning inference of unary operators on numpy types.
* Fix a crash with typing.NamedTuple and empty fields.
* Add a proper strerror inference to the OSError exceptions.
* Support non-const nodes as values of Enum attributes.
* Fix a crash in the enum brain tip caused by non-assign members in class \ 
definitions.
* brain_numpy returns an undefined type for numpy methods to avoid \ 
assignment-from-no-return
* Fix a bug where a call to a function that has been previously called via
  functools.partial was wrongly inferred
* Fix a recursion error caused by inferring the slice builtin.
* Remove the restriction that "old style classes" cannot have a MRO.
  This does not make sense any longer given that we run against Python 3
  code.
* Added more builtin exceptions attributes.
* Add a registry for builtin exception models.
* Add brain tips for http.client.
* Prevent crashing when processing enums with mixed single and double quotes.
* typing types have the __args__ property.
* Fix a bug where an Attribute used as a base class was triggering a crash
* Added special support for enum.IntFlag
* Extend detection of data classes defined with attr
* Fix typo in description for brain_attrs