Change minimal python version

setup.py

@@ -19,7 +19,7 @@ with codecs.open(os.path.join(os.path.abspath(os.path.dirname(
         raise RuntimeError('Unable to determine version.')
 
 
-if sys.version_info < (3, 5, 1):
+if sys.version_info < (3, 4, 0):
     raise RuntimeError("aiosocks requires Python 3.5.1+")