Prep 5.5.0 release.

CHANGES.rst

@@ -2,12 +2,10 @@
  Change History
 ================
 
-5.5.0 (unreleased)
+5.5.0 (2018-10-13)
 ==================
 
-- Remove support for ``python setup.py test``. It hadn't been working
-  for some time. See `issue #218
-  <https://github.com/zopefoundation/ZODB/issues/218>`_.
+- Add support for Python 3.7.
 
 - Bump the dependency on zodbpickle to at least 1.0.1. This is
   required to avoid a memory leak on Python 2.7. See `issue 203
@@ -15,13 +13,15 @@
 
 - Bump the dependency on persistent to at least 4.4.0.
 
-- Add support for Python 3.7.
-
 - Make the internal support functions for dealing with OIDs (``p64``
   and ``u64``) somewhat faster and raise more informative
   exceptions on certain types of bad input. See `issue 216
   <https://github.com/zopefoundation/ZODB/issues/216>`_.
 
+- Remove support for ``python setup.py test``. It hadn't been working
+  for some time. See `issue #218
+  <https://github.com/zopefoundation/ZODB/issues/218>`_.
+
 - Make the tests run faster by avoiding calls to ``time.sleep()``.
 
 5.4.0 (2018-03-26)

setup.py

@@ -13,7 +13,7 @@
 ##############################################################################
 from setuptools import setup, find_packages
 
-version = '5.5.0.dev0'
+version = '5.5.0'
 
 classifiers = """\
 Intended Audience :: Developers