prepare release log for Messaging and InstanceID (#2995)

Author: charlotteliang

Firebase/InstanceID/CHANGELOG.md

@@ -1,5 +1,7 @@
-# Unreleased
-- A keychain migration crash fix (#2731)
+# 2019-05-21 -- 4.1.0
+- Fixed a race condition where checkin was deleted before writing during app start, causing notifications to not be delivered correctly. (#2438)
+- Fixed a keychain migration crash. (#2731)
+- Remove reflection call to get checkin info from Firebase Messaging. (#2825)
 
 # 2019-05-07 -- 4.0.0
 - Remove deprecated `token` method. Use `instanceIDWithHandler:` instead. (#2741)

Firebase/Messaging/CHANGELOG.md

@@ -1,3 +1,8 @@
+# 2019-05-21 -- v4.0.1
+- Fix race condition checkin is deleted before writing during app start. This cleans up the corrupted checkin and fixes #2438. (#2860)
+- Separete APNS proxy methods in GULAppDelegateSwizzler so developers don't need to swizzle APNS related method unless explicitly requested, this fixes #2807. (#2835)
+- Clean up code. Remove extra layer of class. (#2853)
+
 # 2019-05-07 -- v4.0.0
 - Remove deprecated `useMessagingDelegateForDirectChannel` property.(#2711) All direct channels (non-APNS) messages will be handled by `messaging:didReceiveMessage:`. Previously in iOS 9 and below, the direct channel messages are handled in `application:didReceiveRemoteNotification:fetchCompletionHandler:` and this behavior can be changed by setting `useMessagingDelegateForDirectChannel` to true. Now that all messages by default are handled in `messaging:didReceiveMessage:`. This boolean value is no longer needed. If you already have set useMessagingDelegateForDirectChannel to YES, or handle all your direct channel messages in `messaging:didReceiveMessage:`. This change should not affect you.
 - Remove deprecated API to connect direct channel. (#2717) Should use `shouldEstablishDirectChannel` property instead.