Dynoxide 0.11.3: closing a Windows port hijack

Dynoxide 0.11.3 is a small one, and for once there isn't a conformance fix in it. It's about who is allowed to bind the ports. An issue had been sitting on the tracker for a while: investigate SO_EXCLUSIVEADDRUSE on Windows, for parity with the TIME_WAIT bypass dynoxide already had on Unix. I finally picked it up this week, and the investigation came back inside out. The parity already existed.…