Problem: Cryptoconditions not pinned which is casuing build failure (#…

…2512)

Solution: Pin cryptoconditions so that docs build properly

setup.py

@@ -79,7 +79,7 @@ def check_setuptools_features():
     # TODO Consider not installing the db drivers, or putting them in extras.
     'pymongo~=3.6',
     'pysha3~=1.0.2',
-    'cryptoconditions~=0.7.2',
+    'cryptoconditions==0.7.2',
     'python-rapidjson~=0.6.0',
     'logstats~=0.2.1',
     'flask>=0.10.1',