Let's try those version updates again

doc/CHANGES.rst

@@ -98,6 +98,9 @@ Features Added
 
 - Updated packages:
 
+  - Acquisition = 2.13.1
+  - ExtensionClass = 2.13.0
+  - Persistence = 2.13.0
   - zope.annotation = 3.5.0
   - zope.app.form = 3.12.1
   - zope.broken = 3.6.0

versions.cfg

@@ -2,15 +2,15 @@
 versions = versions
 
 [versions]
-Acquisition = 2.13.0
+Acquisition = 2.13.1
 ClientForm = 0.2.10
 DateTime = 2.12.0
 distribute = 0.6.10
 docutils = 0.6
-ExtensionClass = 2.12.0
+ExtensionClass = 2.13.0
 Jinja2 = 2.2.1
 mechanize = 0.1.11
-Persistence = 2.12.0
+Persistence = 2.13.0
 Pygments = 1.1.1
 python-gettext = 1.0
 pytz = 2009r