2017-12-11 -- v2.0.8

• Fixed a crash caused by a reflection call during logging.
• Updating server with the latest parameters and deprecating old ones.

2017-11-27 -- v2.0.7

• Improve identity reset process, ensuring all information is reset during Identity deletion.

2017-11-06 -- v2.0.6

• Make token refresh weekly.
• Fixed a crash when performing token operation.

2017-10-11 -- v2.0.5

• Improved support for working in shared Keychain environments.

2017-09-26 -- v2.0.4

• Fixed an issue where the FCM token was not associating correctly with an APNs
  device token, depending on when the APNs device token was made available.
• Fixed an issue where FCM tokens for different Sender IDs were not associating
  correctly with an APNs device token.
• Fixed an issue that was preventing the FCM direct channel from being
  established on the first start after 24 hours of being opened.

2017-09-13 -- v2.0.3

• Fixed a race condition where a token was not being generated on first start,
  if Firebase Messaging was included and the app did not register for remote
  notifications.

2017-08-25 -- v2.0.2

• Fixed a startup performance regression, removing a call which was blocking the
  main thread.

2017-08-07 -- v2.0.1

• Fixed issues with token and app identifier being inaccessible when the device
  is locked.
• Fixed a crash if bundle identifier is nil, which is possible in some testing
  environments.
• Fixed a small memory leak fetching a new token.
• Moved to a new and simplified token storage system.
• Moved to a new queuing system for token fetches and deletes.
• Simplified logic and code around configuration and logging.
• Added clarification about the 'apns_sandbox' parameter, in header comments.

2017-05-08 -- v2.0.0

• Introduced an improved interface for Swift 3 developers
• Deprecated some methods and properties after moving their logic to the
  Firebase Cloud Messaging SDK
• Fixed an intermittent stability issue when a debug build of an app was
  replaced with a release build of the same version
• Removed swizzling logic that was sometimes resulting in developers receiving
  a validation notice about enabling push notification capabilities, even though
  they weren't using push notifications
• Fixed a notification that would sometimes fire twice in quick succession
  during the first run of an app

2017-03-31 -- v1.0.10

• Improvements to token-fetching logic
• Fixed some warnings in Instance ID
• Improved error messages if Instance ID couldn't be initialized properly
• Improvements to console logging

2017-01-31 -- v1.0.9

• Removed an error being mistakenly logged to the console.

2016-07-06 -- v1.0.8

• Don't store InstanceID plists in Documents folder.

2016-06-19 -- v1.0.7

• Fix remote-notifications warning on app submission.

2016-05-16 -- v1.0.6

• Fix CocoaPod linter issues for InstanceID pod.

2016-05-13 -- v1.0.5

• Fix Authorization errors for InstanceID tokens.

2016-05-11 -- v1.0.4

• Reduce wait for InstanceID token during parallel requests.

2016-04-18 -- v1.0.3

• Change flag to disable swizzling to FirebaseAppDelegateProxyEnabled.
• Fix incessant Keychain errors while accessing InstanceID.
• Fix max retries for fetching IID token.

2016-04-18 -- v1.0.2

• Register for remote notifications on iOS8+ in the SDK itself.