New filters WlzPointsFromDomain.c and WlzPointsToMarkers.
Now working correctly again, main problem was AlcKDTNodeIntersectsSphere() not working in 3D.
Simplified generation of thin shell domain.
Added new functions WlzPointsToMarkers() and WlzPointsFromDomObj().
Added new functions WlzPointsToMarkers(), WlzPointsFromDomObj() and WlzBoundaryDomain().
Allow zero points when creating a points domain.
Add timming.
Existing code moved to new function WlzBoundaryDomain() and this function now called.
Existing code moved to new function WlzBoundaryDomain() and this function now called from binary.
Trivial layout changes.