By Lars Mucklejohn London fintech Apron has raised $30m (£22.4m) in Series B funding to boost hiring and launch a slew of new accounting and payment tools for small businesses. The funding round was led by Zinal Growth, a growth-stage focused tech fund chaired by Checkout.com founder and chief executive Guillaume Pousaz. Existing investors that participated include Index Ventures, who led Apron’s $15m (£11.2m) Series A last September, and Bessemer Venture Partners. American tech tycoon Tony Fadell, who co-created the iPhone and iPod for Apple, also participated through his venture fund Build C…