In a special series running throughout the week, BIV examines the unicorns that have been emerging from B.C. over the past year-plus. Once a rare sight, these tech firms with $1-billion valuations have become commonplace on the West Coast. Judi Hess, CEO of Copperleaf, talks to BIV Today about her company’s journey from a small consultancy to going public. Tyler Orton hosts.