0.4.0   July 29, 2011
        - INCOMPATIBLE: The arguments of delete() is changed.  $column is not
          needed.
        - INCOMPATIBLE: The return value of get() is changed.  If $column is
          scalar, then just return a simple hash.
        - Support cql().
        - Support truncate().

0.3.0   July 29, 2011
        - INCOMPATIBLE: The return value of get() is much simpler now.

0.2.1   July 27, 2011
        - Add development warning.

0.2.0   July 26, 2011
        - INCOMPATIBLE: Change get_count() arguments.

0.1.0   July 26, 2011
        - INCOMPATIBLE: Remove insert(), use put() instead.
        - INCOMPATIBLE: Remove remove(), use delete() instead.
        - INCOMPATIBLE: Remove get_slice(), merge its functionality into get().
        - Support custom Thrift transport read/write.

0.0.7   July 23, 2011
        - Support get operations for multiple keys.

0.0.6   July 18, 2011
        - Rename "insert" to "put" and setup alias to keep compatibility.
        - Rename "remove" to "delete" and setup alias to keep compatibility.
        - Fix multiple columns insert bug.

0.0.5   July 17, 2011
        - Support for count and reverse in get_slice and get_count
          functions. (thanks for jcbf, issue #4)
        - Fix typo in sample.
        - Upgrade Thrift interface to 0.8.1 generated version.

0.0.4   April 18, 2011
        - Support consistency level.

0.0.3   April 18, 2011
        - Support timestamp.
        - Remove unnecessary file.

0.0.2   April 18, 2011
        - Rename count() to get_count().
        - Import Cassandra thrift-generated code.

0.0.1   April 18, 2011
        - Initial release.