Boston-based G20 Ventures recently announced the closing of its first fund with $63.5MM in assets. G20 was founded and is led by Bill Wiberg and Bob Hower, industry veterans who will be familiar to many from their years at Advanced Technology Ventures (ATV), where they remain GPs. Their investment focus is on early-stage, East Coast enterprise software, infrastructure and Internet solutions, and they will not invest in 100% consumer-facing businesses. They have persuaded an impressive group of individuals (the group …