Merge branch 'master' into deterministic-builds

.circleci/config.yml

@@ -12,8 +12,7 @@ jobs:
           command: sudo python -m pip install flake8
       - run:
           name: Test.
-          command: flake8 --exclude=.git,.venv,site .
+          command: flake8 .
-
   osx-python3.6:
     macos:
       xcode: "9.4.1"

setup.cfg

@@ -22,4 +22,12 @@ universal = 1
 [flake8]
 ignore = E501,W503
 application-import-names = cibuildwheel
-extend-exclude = cibuildwheel/resources/
+exclude =
+  cibuildwheel/resources/,
+  dist/,
+  build/,
+  .git/,
+  env/,
+  env2/,
+  .venv/,
+  site/