Added composite types support (still undocumented). Added composite t…
…ype example in simple test.
Smarter pool management.
Fixed client address bug in pool.
Implemented connection pool. Added ring method.
Fixed full row deletion on method remove.
Fixed a few bugs.
Bug fix in Cassandra.pm
Fixed bug in get_range. Slightly improved error messages.
Update POD documentation
Added index creation method
Fixed multiget bug
Changed insert and batch insert $columns argument type
Updated POD documentation
Added super column support. Added ttl support. Included extra example…
…s for new functionality.
Added column family listing and creation methods.
Fixed method returns (when possible return hash)