Added new record to dataset_preferences.py which will use the centre of mass of spots instead of the brightest pixel for indexing - may decide to remove this later.
Added new record to dataset_preferences.py which will use the centre
of mass of spots instead of the brightest pixel for indexing - may decide to
remove this later.

Note well, that this requires the latest (31oct06) build of labelit.

xia2/xia2,xia2/xia2