- fix: Make runtime appid delimiter configurable
https://github.com/openpeer/op/issues/60

- fix: Thread priorities don't always take effect
https://github.com/openpeer/op/issues/67

- fix: Singleton::ref() need to change to static object with .singleton()
https://github.com/openpeer/op/issues/66
- fix: Bad state crash upon shutdown
https://github.com/openpeer/op-core-cpp/issues/7