Update flake8 from 3.5.0 to 3.7.5

pyup-bot · pyup-bot · commit 0fb12be89df7 · 2019-02-11T15:15:34.000+02:00
diff --git a/requirements-dev.txt b/requirements-dev.txt
@@ -6,7 +6,7 @@ aiomysql==0.0.20
 aiopg==0.16.0
 coverage==4.5.2
 docker==3.7.0
-flake8==3.5.0
+flake8==3.7.5
 ipdb==0.11
 motor==1.2.2
 pytest-cov==2.5.1
