Allow later async_timeout

Author: fabaff

setup.py

@@ -19,7 +19,7 @@
     author="Fabian Affolter",
     author_email="[email protected]",
     license="Apache License 2.0",
-    install_requires=["aiohttp<4", "async_timeout<4", "click", "setuptools"],
+    install_requires=["aiohttp<4", "async_timeout<5", "click", "setuptools"],
     packages=find_packages(),
     zip_safe=True,
     include_package_data=True,