Method remoteFlush

include/VectorDisplay.h:282–286

    }
    
    virtual void remoteFlush() {
        /*while(remoteAvailable()) 
            remoteRead();
            * */
    }
    virtual int remoteRead() = 0; // must be non-blocking
    virtual void remoteWrite(uint8_t c) = 0;
    virtual void remoteWrite(const void* data, size_t n) = 0;