Add blurb

Author: jaraco

Misc/NEWS.d/next/Library/2021-07-28-22-53-18.bpo-44771.BvLdnU.rst

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+Added ``importlib.simple`` module implementing adapters from a low-level
+resources reader interface to a ``TraversableResources`` interface. Legacy
+API (``path``, ``contents``, ...) is now supported entirely by the
+``.files()`` API with a compatibility shim supplied for resource loaders
+without that functionality. Feature parity with ``importlib_resources`` 5.2.