don't memoize current login
don't memoize current login

…as it could potentially lead to errors when the method is called multiple times with a valid token first and an invalid one later on

fidalgo/rails_api_auth,simplabs/rails_api_auth,ibroadfo/rails_api_auth,fidalgo/rails_api_auth,ibroadfo/rails_api_auth,fidalgo/rails_api_auth,ibroadfo/rails_api_auth,simplabs/rails_api_auth,jimbeaudoin/rails_api_auth,simplabs/rails_api_auth,jimbeaudoin/rails_api_auth,jimbeaudoin/rails_api_auth