<commit_before># unreleased
- [changed] Updated NSError with a failure reason to give more details on the error.

# 2020-04 -- v4.4.0
- [changed] Changed the location of source under FirebaseMessaging folder to fit the current repository organization.

# 2020-04 -- v4.3.1
- [fixed] Fixed an issue that when a token is deleted, the token refresh notificaiton and delegate is not triggered. (#5338)
<commit_msg>update changelog for messaging (#5581)<commit_after># 2020-05 -- v4.4.1
- [changed] Updated NSError with a failure reason to give more details on the error. (#5511)

# 2020-04 -- v4.4.0
- [changed] Changed the location of source under FirebaseMessaging folder to fit the current repository organization. (#5476)

# 2020-04 -- v4.3.1
- [fixed] Fixed an issue that when a token is deleted, the token refresh notificaiton and delegate is not triggered. (#5338)

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