Replicate lapy flake8 config

Author: af-a

.flake8

@@ -0,0 +1,23 @@
+[flake8]
+max-line-length = 88
+
+ignore =
+    # these rules don't play well with black
+    # whitespace before ':'
+    E203
+    # line break before binary operator
+    W503
+    E241,E305,W504,W605,E731
+
+exclude =
+    .git
+    .github
+    setup.py
+    data
+    examples
+    *.egg-info
+
+per-file-ignores =
+    # __init__.py files are allowed to have unused imports and lines-too-long
+    */__init__.py:F401
+    */**/__init__.py:F401,E501