Log Message:
py-sphinx-autoapi: update to 1.4.0.

v1.4.0 (2020-06-07)
-------------------

Features
^^^^^^^^
* `#197 <https://github.com/readthedocs/sphinx-autoapi/issues/197>`: Added
  ``autoapi.__version__`` and ``autoapi.__version_info__`` attributes
  for accessing version information.
* `#201 <https://github.com/readthedocs/sphinx-autoapi/issues/201>`: (Python)
  Added the ``autoapi_member_order`` option to allow the order that members
  are documentated to be configurable.
* `#203 <https://github.com/readthedocs/sphinx-autoapi/issues/203>`: (Python)
  A class without a docstring inherits one from its parent.
  A methods without a docstring inherits one from the method that it overrides.
* `#204 <https://github.com/readthedocs/sphinx-autoapi/issues/204>`: (Python)
  Added the ``imported-members`` AutoAPI option to be able to enable or disable
  documenting objects imported from the same top-level package or module
  without needing to override templates.

Bug Fixes
^^^^^^^^^
* `#198 <https://github.com/readthedocs/sphinx-autoapi/issues/198>`:
  Documentation describes the required layout for template override directories.
* `#195 <https://github.com/readthedocs/sphinx-autoapi/issues/195>`: (Python)
  Fixed incorrect formatting when ``show-inheritance-diagram``
  and ``private-members`` are turned on.
* `#193 <https://github.com/readthedocs/sphinx-autoapi/issues/193>` and
* `#208 <https://github.com/readthedocs/sphinx-autoapi/issues/208>`: (Python)
  Inheritance diagrams can follow imports to find classes to document.
* `#213 <https://github.com/readthedocs/sphinx-autoapi/issues/213>`: (Python)
  Fixed module summary never showing.

Trivial/Internal Changes
^^^^^^^^^^^^^^^^^^^^^^^^
* black shows diffs by default
* `#207 <https://github.com/readthedocs/sphinx-autoapi/issues/207>`:
  Fixed a typo in the code of the golang tutorial.