v2.7.0

• Import from astroid.node_classes and astroid.scoped_nodes has been deprecated in favor of
  astroid.nodes. Only the imports from astroid.nodes will work in astroid 3.0.0.

• Add support for arbitrary Enum subclass hierachies

  Closes pylint-dev/pylint#533
  Closes pylint-dev/pylint#2224
  Closes pylint-dev/pylint#2626

• Add inference tips for dataclass attributes, including dataclasses.field calls.
  Also add support for InitVar.

  Closes pylint-dev/pylint#2600
  Closes pylint-dev/pylint#2698
  Closes pylint-dev/pylint#3405
  Closes pylint-dev/pylint#3794

• Adds a brain that deals with dynamic import of IsolatedAsyncioTestCase class of the unittest module.

  Closes pylint-dev/pylint#4060