Fintech startup Upgrade has been positioning itself as a neobank. And yet, the company has mostly been focused on personal loans and more recently credit cards. You couldn’t just replace your bank account with Upgrade. Upgrade is adding two important missing pieces of the puzzle with checking accounts and debit cards. With today’s launch, Upgrade competes more directly with other challenger banks, such as Chime, N26 and others. You can open a checking account, control it from a mobile app, send and receive money from that account. There are no…