As the world waits for $65 billion payments tech giant Stripe to go public, a wave of smaller startups continues to roll into the market to pick up more payments business. In one of the latest developments, Danish company Flatpay, which builds payment solutions for small and medium physical merchants like shops, restaurants and salons, has raised €45 million ($47 million) led by Dawn Capital. Flatpay had raised just under $21 million before this latest Series B, and with this new funding, we und...