Update README.md

README.md

@@ -461,6 +461,8 @@ Required unless a custom `tokenChangedHandler` is set, in which case it cannot b
 
 #### onLoginRequestError
 
+_Added in v0.14.0_
+
 `Function` (optional)
 
 A handler called if the login API endpoint returns a non-200 response. If a handler is not defined, this library will throw on any non-200 responses.
@@ -469,6 +471,8 @@ Not used or allowed if a custom `tokenChangedHandler` is set.
 
 #### onLogoutRequestError
 
+_Added in v0.14.0_
+
 `Function` (optional)
 
 A handler called if the logout API endpoint returns a non-200 response. If a handler is not defined, this library will throw on any non-200 responses.
@@ -555,6 +559,8 @@ For security, the `maxAge` value must be two weeks or less. Note that `maxAge` i
 
 #### onVerifyTokenError
 
+_Added in v0.14.0_
+
 `Function` (optional)
 
 Error handler that will be called if there's an unexpected error while verifying the user's ID token server-side. It will receive a [Firebase auth error](https://firebase.google.com/docs/reference/node/firebase.auth.Error).
@@ -563,6 +569,8 @@ This library will **not** throw when it cannot verify an ID token. Instead, it w
 
 #### onTokenRefreshError
 
+_Added in v0.14.0_
+
 `Function` (optional)
 
 Error handler that will be called if there's an unexpected error while refreshing the user's ID token server-side.