This is a bugfix release.
- Fix potential crash when client connects with an invalid CONNECT packet.
- Fix incorrect invalid socket comparison on Windows.
- Server shouldn't crash when a message is published to foo/ when a subscription to foo/# exists (bug #901697).
- SO_REUSEADDR doesn't work the same on Windows, so don't use it.
- Cygwin builds now support Windows service features.
- Fix $SYS/broker/bytes/sent reporting.