added changelog, raise to 0.12
diff --git a/setup.py b/setup.py
index 9897009..56b2e26 100644
--- a/setup.py
+++ b/setup.py
@@ -63,7 +63,7 @@
         features['speedups'] = speedups
     setup(
         name='MarkupSafe',
-        version='0.11',
+        version='0.12',
         url='http://dev.pocoo.org/',
         license='BSD',
         author='Armin Ronacher',