Adding support for an Client#empty_login call
Adding support for an Client#empty_login call

I find this easier than parsing the login_accounts call because I don't have to parse the aggrStatusCode, and this will return challenge questions if needed
https://intuitpartnerplatform.lc.intuit.com/questions/797144-notrefreshedreason-challenge_response_required-when-using-getaccounttransactions

LendingHome/aggcat