Update cryptography from 2.0.3 to 2.1

pyup-bot · pythad · commit 3c6cddc7b33a · 2017-10-11T21:06:36.000+03:00
diff --git a/requirements/dev.txt b/requirements/dev.txt
@@ -8,5 +8,5 @@ flake8==3.4.1
 tox==2.9.1
 coverage==4.4.1
 Sphinx==1.6.4
-cryptography==2.0.3
+cryptography==2.1
 PyYAML==3.12
