- fix: account wasn't subscribed to backgrounding
- fix: account would not wait for finder to fully logout before going to background
- fix: finder connection didn't correctly detect that it needed to logout during shutdown
https://github.com/openpeer/op/issues/46

- fix: backgrounding called wrong method when returning from background
- fix: ICE session had a few mistakes to decide when it was safe to background
- fix: TURN socket didn't correctly determine when it was safe for backgrounding
https://github.com/openpeer/op/issues/46