intro docs updated: added typing library

docs/intro.rst

@@ -82,3 +82,11 @@ The library is downloadable and installable from Pypi. Just use standard command
 
 * pip install construct
 * pip install construct[extras]
+
+
+Type Hints / Type Annotations
+---------------------------------
+
+As an extension to this library there is the `construct-typing <https://pypi.org/project/construct-typing/>`_ library, which provides PEP 561 compliant stub files for this library. It also provides extended adapters to describe complex structures using PEP 526 type annotations for improved static code analysis with mypy.
+
+* pip install construct-typing