ShardingNode: 'hi!' command was added
README.md: list of sharding node protocol commands was updated due to the last updates
ShardDescription: startHash and endHash were added (20-chars strings). They are calculated by ShardingConfiguration
ClusterManager's development was started
Merge branch 'cluster-management' of https://github.com/yeputons/DbFall2013 into fr5-compacting
ClusterManager: now it can ping node
Merge branch 'master' of https://github.com/yeputons/DbFall2013
Merge branch 'master' into fr5-compacting
HashTrieEngine: now IllegalStateException is used in reopen() instead of InvalidStateException
ClusterManager: 'invalid command' message was added per-node commands
ClusterManager: 'compact' per-node command was added
ShardingNode: compacting works now. However, it relies on System.gc() very hard which can lead to problems
'shutdown' command was added to ClusterManager and ShardingNode (`dwn`)
ClusterManager: help was added
runCompaction() method was moved to HashTrieEngine from ShardingNode
HashTrieEngine.runCompaction(): some logging was added
HashTrieEngineTest: one-threaded compaction test was added