- fix: Services global local goes out of scope on main thread will cause other thread to crash
https://github.com/openpeer/op-services-cpp/issues/28

- Clean-up thread shutdown / each module to self manage threads
https://github.com/openpeer/op/issues/41

- global singletons need to create themselves with safe singleton lazy shared pointer
https://github.com/openpeer/op/issues/59