When we caught up with Gusto last year, the small business payroll startup had just raised $200 million and was launching a new office in New York City. Over the past few years though, Gusto has also been accruing new features outside of its original payroll product, features that redefine the borders between payroll and financial wellness, and in the process, are blurring the lines of the classic fintech market map. Today, the company announced a slew of new offerings that it hopes will give employees better financial and health…