Changes

New float attribute '''''shift_time''''' has been added. Its value is approximate duration of the shift in seconds with default of 1.0. The time is measured from first moment of clutch disconnect to the moment clutch is fully connected again. By our precise measurement shifting times of most current transmissions are between 0.7 second (new Opticruises) and 1.5 seconds (old MP3 transmissions). Values drastically different may cause unwanted effects.