RemoteProtocol: Bump remote protocol version to 42.0
RemoteProtocol: Bump remote protocol version to 42.0

Changing how we serialise doubles means an incompatible remote protocol
change.

Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand