+ NotConnectedException is now thrown if message is sent using closed connection.
+ OperationAbortedException is now thrown if connection has been closed before response is received.
+ IOperationDispatcher method names have been changed to distinguish handlers for requests and responses
+ DispatchAbortResponses method has been added to IOperationDispatcher, allowing to abort all pending operations for given channel
+ added IConfigurableNetworkConnection with settable OperationDispatcher
+ renamed IMessageSender to IMessageChannel