Update werkzeug from 0.14.1 to 0.15.0

requirements/dev.txt

@@ -5,9 +5,9 @@
 Sphinx==1.8.5 \
     --hash=sha256:9f3e17c64b34afc653d7c5ec95766e03043cc6d80b0de224f59b6b6e19d37c3c \
     --hash=sha256:c7658aab75c920288a8cf6f09f244c6cfdae30d82d803ac1634d9f223a80ca08
-Werkzeug==0.14.1 \
-    --hash=sha256:d5da73735293558eb1651ee2fddc4d0dedcfa06538b8813a2e20011583c9e49b \
-    --hash=sha256:c3fd7a7d41976d9f44db327260e263132466836cef6f91512889ed60ad26557c
+Werkzeug==0.15.0 \
+    --hash=sha256:590abe38f8be026d78457fe3b5200895b3543e58ac3fc1dd792c6333ea11af64 \
+    --hash=sha256:ee11b0f0640c56fb491b43b38356c4b588b3202b415a1e03eacf1c5561c961cf
 blessings==1.7 \
     --hash=sha256:caad5211e7ba5afe04367cdd4cfc68fa886e2e08f6f35e76b7387d2109ccea6e \
     --hash=sha256:b1fdd7e7a675295630f9ae71527a8ebc10bfefa236b3d6aa4932ee4462c17ba3 \