Update CHANGELOG.md (#2781)

Chuan Ren · Corrob · commit 6938e7a889a3 · 2019-04-22T12:57:45.000-07:00
diff --git a/Firebase/Auth/CHANGELOG.md b/Firebase/Auth/CHANGELOG.md
@@ -1,5 +1,9 @@
-# Unreleased
-- `GULAppDelegateSwizzler` is used for the app delegate swizzling (#2591)
+# v6.0.0
+- Add support of single sign on. (#2684)
+- Deprecate `reauthenticateAndRetrieveDataWithCredential:completion:`, `signInAndRetrieveDataWithCredential:completion:`, `linkAndRetrieveDataWithCredential:completion:`, `fetchProvidersForEmail:completion:`. (#2723, #2756)
+- Implement oauth secret token in headful-lite. (#2663)
+- Remove pendingToken from public API. (#2676)
+- `GULAppDelegateSwizzler` is used for the app delegate swizzling. (#2591)
 
 # v5.4.2
 - Support new error code ERROR_INVALID_PROVIDER_ID. (#2629)
