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.