Sort commits using isort

Also added lint test to ensure they stay sorted.

setup.py

@@ -1,7 +1,8 @@
-from setuptools import setup, find_packages
 import os
 import sys
 
+from setuptools import find_packages, setup
+
 import versioneer
 
 
@@ -62,6 +63,7 @@ setup(
             "aiohttp==3.5.3",
             "beautifulsoup4==4.6.1",
             "asgiref==3.1.2",
+            "isort==4.3.20",
         ]
         + maybe_black
     },