Cardionomic, a med-tech startup that's developing a device to treat a type of heart failure, has raised $20 million in its first round of venture-capital funding. The Star Tribune reports on the deal, which is unusually big for a Series A round, at least for a med-tech company. (Tech firm Field Nation raised $30 million in its first big external round last month.) This year, it's actually pretty big for a med-tech company at any stage; funding deals have shifted more toward software and services. RELATED:...