KATTA-197 add new node selection policy that shuffles the list order
KATTA-206 initial version of ConcurrentOne2ManyListMap to make InteractionProtocol more thread safe
KATTA-206 use concurrent-safe structures in InteractionProtocol & tests
KATTA-216 fix for NPE thrown on ZK disconnect before init finishes
KATTA-216 fixing incorrect comments
KATTA-216 synchronized init to avoid overlapping deploy operations
KATTA-221 LuceneServer.SearcherHandle should be protected
update changelog