add 0.5.2 changelog to master (backport from 0.5.x branch)
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index d0629c2..a5025e1 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -11,6 +11,14 @@
constructor. The ``salt_length`` should be passed to
:class:`~cryptography.hazmat.primitives.asymmetric.padding.PSS` instead.
+0.5.2 - 2014-07-09
+~~~~~~~~~~~~~~~~~~
+
+* Add
+ :class:`~cryptography.hazmat.backends.interfaces.TraditionalOpenSSLSerializationBackend`
+ support to :doc:`/hazmat/backends/multibackend`.
+* Fix compilation error on OS X 10.8 (Mountain Lion).
+
0.5.1 - 2014-07-07
~~~~~~~~~~~~~~~~~~