Changes for version 0.12
- Fix queries hanging on current node close.
Changes for version 0.11_4
- Support service/port configuration per host.
Changes for version 0.11_3
- Fix refcount dependency
Changes for version 0.11_2
- Fix query cache keeping loop alive for 60 seconds after it should be removed
Changes for version 0.11_1
- Fix eventwatch failure not propogating, and losing sequence Futures
- Fix requests over pending threshold getting responses from other requests