What's new in this version:
• Notification settings, open the menu and choose exactly which shops
can reach you. Pick just the ones you care about, or let them all through.
• New ways to narrow the shop list: what's new for you, offers ending
soon, shops just added, and by city.
• Coming back is one tap, sign in with Face ID or your fingerprint.
• The shop list no longer reloads when you come back from an offer.
• On iPhone, the verification code now fills in from Messages.