Check $this->tokens is an instance of AccessToken
Refactoring API, removing process method
Refactoring API, removing "call" method
Renaming "token" method to "getUserTokens"
Refactoring API, removing "setToken" method
Provider class is no longer abstract
Adding getAuthenticationUrl method
No longer forcing approval prompt
Removing whitespace
Providers now implement ProviderInterface
Adding ProviderInterface
We don't need this