Declared the extension safe for parallel reads

Fixes #9.
tox-dev · Mar 25, 2017 · c4657bc · c4657bc
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diff --git a/CHANGELOG.rst b/CHANGELOG.rst
@@ -3,6 +3,7 @@
 
 * Fixed compatibility with Python 3.6 and 3.5.3
 * Fixed ``NameError`` when processing signatures of wrapped functions with type hints
+* Fixed Sphinx warning about parallel reads
 * Added a test suite (thanks Manuel Krebber)
 
 

diff --git a/sphinx_autodoc_typehints.py b/sphinx_autodoc_typehints.py
@@ -162,3 +162,4 @@ def process_docstring(app, what, name, obj, options, lines):
 def setup(app):
     app.connect('autodoc-process-signature', process_signature)
     app.connect('autodoc-process-docstring', process_docstring)
+    return dict(parallel_read_safe=True)