Merge pull request #170 from ets-labs/feature/update-cython-0-27

Update Cython to 0.27

Author: rmk135

docs/main/changelog.rst

@@ -7,6 +7,10 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly 
 follows `Semantic versioning`_
 
+Development version
+-------------------
+- Regenerate C sources using Cython 0.27.
+
 3.6.1
 -----
 - Regenerate C sources using Cython 0.26.

requirements-dev.txt

@@ -1,4 +1,4 @@
-cython==0.26
+cython==0.27
 tox
 unittest2
 coverage