Define socket.MSG_ERRQUEUE for Windows and Mac.
Bump version to 1.0.12.
Incorporate hostname into process name uniqueness test.
Re-resolve process name if user-specified hostname differs from cached.
UdpTransport: work around Windows quirk.
Bump version to 1.0.11.
TCP: use blocking mode for client-side sockets.
Fix inheritance cont.: allow declaring new names in `setup()`.