* Add FIRHeartbeatLogger and unit tests
* Add XCTest module
* Fix warnings
* Exclude files from module import rule
* Add swift_version to FirebaseStorage.podspec
* Update FirebaseStorage.podspec
* Update FirebaseCore.podspec
* Debug storage GHA
* Create separate testing utils target
* Revert "Debug storage GHA"
This reverts commit 962567e180.
* WIP Reorganizing for cocoapods
* Copy some spec config from OCMock
* Fix build issue
* Fix tests
* Add env var to only use testing spec for pod lib lint
* Add new heartbeat-unit test spec
* Bump Core dependency to 8.11
* Test
* Revert "Test"
This reverts commit 23cddd0b17.
* Refactor podspec
* Revert "Refactor podspec"
This reverts commit 71d87fb5d0.
* Testing to see if file is tested
* Revert "Testing to see if file is tested"
This reverts commit 618903a1ed.
* Revert "Revert "Refactor podspec""
This reverts commit ac42b40b06.
* catalyst testing needs env var too
* Remove outdated comment
* Review
* Style
* Review 2
* Fix tvOS CI
