update changes for version 3.3
Merge branch 'master' of https://github.com/axle-h/cassandra-sharp into axle-h-master
reworking roundrobin & tokenring strategies
filter out invalid rpc address (0.0.0.0)
fluent interface refactoring
placement token refactoring
ICqlQuery -> IQuery
cleanup endpoint validation
partitioner implementation (MurmurHash3, RandomPartitioner, NullPartitioner)
PartitionerKey holds the key
Merge branch 'axle-h-master'

Conflicts:
	CHANGES.txt
fixed hash in mumur3
fixed unit test