* Update versions for Release 6.1.0
* Release 6.1.0 - cherry pick of #3007 (#3011)
* 6.1.0 manifest updated. FirebaseInAppMessaging bumped to 0.14.1
* Early return from sending analytics events in instance ID is nil (#3007)
* Update versions for Release 6.0.0
* Update FirebaseSDKs.textproto with new fields. (#2818) (#2834)
* Update FirebaseSDKs.textproto with new fields.
* Update message about strip_32bits flag.
* GULAppDelegateSwizzler - proxy APNS methods separately (#2835) (#2858)
* Cherry-picks for M47 RC5 (#2882)
* fix race condition checkin is deleted before writing during app start (#2860)
* GoogleUtilities min ios version from 6 to 8 (#2876)
* Put secret and oauth credentials into the private headers for now. (#2916) (#2919)
* Add missing Messaging weak_framework dep (#2921) (#2930)
* Update versions for Release 5.12.0
* Add missing nanopb flag
* Isolate Firestore nanopb messages in C++ namespaces (#2046)
* Add C++ namespaces and use C++ linkage for nanopb-generated sources.
* Regenerate nanopb sources as C++
* Add generated C++ nanopb sources to the podspec
These pods depend on FirebaseCore's interop APIs that were introduced
in FirebaseCore version 5.1. This wasn't picked up before since
CocoaPods automatically matched the largest minor version available but
the podspec should accurately represent the version requirements.
Paul Beusterien