Issue with multiple emails from eg. Google

[Spriz]

In my case, Google returns multiple email addresses, so the code @ https://github.com/UseMuffin/OAuth2/blob/master/src/Auth/OAuthAuthenticate.php#L193 doesn't seem to work.

I'm not quite sure in which package this issue should be corrected though 🤔

Example of the object:

[LorenzoRogai]

For anyone searching for a fix i pushed a pull request for this

https://github.com/UseMuffin/OAuth2/pull/18

[Spriz]

Link fix: #18

[ADmad]

Wouldn't simply using the mapFields option as

'mapFields' => ['email' => 'emails.0.value']

solve the problem?