Update isort to 4.3.3
@@ -21,7 +21,7 @@ whitenoise==3.3.1
flake8==3.5.0
flake8-debugger==3.0.0
flake8-blind-except==0.1.1
-isort==4.3.2
+isort==4.3.3
# Helpers
pyprof2calltree==1.4.3