update changelog

CHANGES.txt

@@ -1,4 +1,25 @@
 
+0.1a11
+------
+
+- Add ``alembic`` stuff to scaffold.
+
+- Overhaul Pyramid templates and styles.
+
+- Fix ``current_time()`` in ``sqlalchemy`` module.
+
+- Improve web redirection on user logout.
+
+- Move database extension to subdir in scaffold.
+
+- Add ``BooleanSearchFilter`` class.
+
+- Overhaul CRUD form (create ``CrudView`` class).
+
+- Add ``get_referer()`` in ``pyramid.util`` module.
+
+- Overhaul file monitor Windows service.
+
 0.1a10
 ------