v2.1.0

2.1.0

api changes :

RdbVisitor interface -> abstract  
ReplicatorListener.addRdbRawByteListener -> ReplicatorListener.addRawByteListener
ReplicatorListener.removeRdbRawByteListener -> ReplicatorListener.removeRawByteListener

command changes :

ZIncrByCommand.increment int -> double  
SetTypeOffsetValue.value int -> long  
SetRangeCommand.index int -> long  
SetBitCommand.offset int -> long  
LSetCommand.index int -> long  
LRemCommand.index int -> long  
IncrByTypeOffsetIncrement.increment int -> long  
IncrByCommand.value int -> long
HIncrByCommand.increment int -> long
DecrByCommand.value int -> long

fix bugs