Update to HockeySDK 2.5.1
Set default delegate for HockeySDK
Update HockeySDK to v2.5.2
Update to HockeySDK v2.5.3
Update to HockeySDK v2.5.4
Update to use SDK v3.0 Beta 3
Merge branch 'refs/heads/feature/feedback' into develop
Update to HockeySDK 3.0b4
Updates to use HockeySDK-iOS 3.0

- includes demo of feedback interface
Merge branch 'release/2.0.0'