Sort imports with isort

Keep imports alphabetically sorted and their order homogeneous across
Python source files.

The isort project has more feature and is more active than the
flake8-import-order plugin.

Most issues caught were simply import ordering from the same module.
Where imports were purposefully placed out of order, tag with
isort:skip.

1 files changed, 2 insertions, 3 deletions

diff --git a/tests/test_util_typing.py b/tests/test_util_typing.py
index 4059dc6bd..354db1567 100644
--- a/tests/test_util_typing.py
+++ b/tests/test_util_typing.py
@@ -10,9 +10,8 @@
 
 import sys
 from numbers import Integral
-from typing import (
-    Any, Dict, Generator, List, TypeVar, Union, Callable, Tuple, Optional, Generic
-)
+from typing import (Any, Callable, Dict, Generator, Generic, List, Optional, Tuple, TypeVar,
+                    Union)
 
 import pytest