Only require typing library for versions of Python below 3.5

Author: fernando-mc

setup.cfg

@@ -34,7 +34,7 @@ include_package_data = True
 packages = find:
 install_requires =
     requests>=2.21,<3.0
-    typing>=3.6,<4.0
+    typing>=3.6,<4.0;python_version<"3.5"
 python_requires = >=2.7, !=3.0.*, !=3.1.*', !=3.2.*, !=3.3.*'
 
 [options.packages.find]