control moduel: changed position/adjustto to selection in the default preset: grain position will be restricted to selection within the sample based on the selection defined in the engine~
livebuffer~: fixes to internal display refresh mechanism
livebuffer.display.control: when there is no change to the buffer but the grain changed, only the grain highlight will be updated (not the whole waveform). Added displauy/clear message
some changes to the livebuffer~ demo patch