Merge pull request #69 from inexplicable/cluster3

Cluster3
Merge pull request #76 from inexplicable/cluster3

Cluster3
Merge pull request #77 from inexplicable/cluster3

updated dep using snapshot versions, fixed broken unit test
Merge pull request #78 from inexplicable/cluster3

Cluster3
Merge pull request #79 from inexplicable/cluster3

Cluster3
Merge pull request #80 from inexplicable/cluster3

options: skipCheckBusyPorts
verify memory leak detection based on examples/cluster-longrun.js
Merge pull request #12 from cubejs/cluster3

Cluster3