0.7.0

• [Feature] Can now initialize the SDK with multiple app secrets for different platforms (Android vs iOS) in the same Start call. No need to split the initialization between Start and Configure anymore. Just use MobileCenter.Start("android={androidAppSecret};ios={iosAppSecret}", typeof(Analytics), typeof(Crashes)); for example.
• [Bug fix] Fix a crash happening on iOS devices before iOS 10 when reading MobileCenter.InstallId property.
• [Misc] Renamed SetServerUrl to SetLogUrl.
• [iOS] Include underlying iOS SDK changes from the following releases:
  • https://github.com/Microsoft/mobile-center-sdk-ios/releases/tag/0.5.1
  • https://github.com/Microsoft/mobile-center-sdk-ios/releases/tag/0.5.0
  • https://github.com/Microsoft/mobile-center-sdk-ios/releases/tag/0.4.2
  • https://github.com/Microsoft/mobile-center-sdk-ios/releases/tag/0.4.1
  • https://github.com/Microsoft/mobile-center-sdk-ios/releases/tag/0.4.0