Make a more obvious location for the changelog

CHANGES

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+Changes in Version 0.5.1
+
+    * Automatically detect if a column family is a standard column family or a super column family
+    * multiget_count() support
+    * Allow preservation of key order in multiget() if an ordered dictionary is used
+    * Convert timestamps to v1 UUIDs where appropriate
+    * pycassaShell documentation
+    * Use Thrift API 17.1.0
+
+Changes in Version 0.5.0
+
+    * Connection Pooling support: pycassa.pool
+    * Started moving logging to pycassa.logger
+    * Use Thrift API 14.0.0
+
+Changes in Version 0.4.3
+
+    * Autopack on CF’s default_validation_class
+    * Use Thrift API 13.0.0
+
+Changes in Version 0.4.2
+
+    * Added batch mutations interface: pycassa.batch
+    * Made bundled thrift-gen code a subpackage of pycassa
+    * Don’t attempt to reencode already encoded UTF8 strings
+
+Changes in Version 0.4.¶
+
+    * Added batch_insert()
+    * Redifined insert() in terms of batch_insert()
+    * Fixed UTF8 autopacking
+    * Convert datetime slice args to uuids when appropriate
+    * Changed how thrift-gen code is bundled
+    * Assert that the major version of the thrift API is the same on the client and on the server
+    * Use Thrift API 12.0.0
+
+Changes in Version 0.4.0
+
+    * Added pycassaShell, a simple interactive shell
+    * Converted the test config from xml to yaml
+    * fixed overflow error on get_count()
+    * Only insert columns which exist in the model object
+    * Make ColumnFamilyMap not ignore the ColumnFamily’s dict_class
+    * Specify keyspace as argument to connect()
+    * Add support for framed transport and default to using it
+    * Added autopacking for column names and values
+    * Added support for secondary indexes with get_indexed_slices() and pycassa.index
+    * Added truncate()
+    * Use Thrift API 11.0.0