Can now grow skin areas so that they become anchored by the infill above and below.
Can now grow skin areas so that they become anchored by the infill above and below.

If the anchor_skin_in_infill setting is true, skin areas are expanded by
an amount that is the infill line distance * 1.4. This should be sufficient
to ensure that the skin is anchored in the infill by at least the distance
between the infill lines.

alephobjects/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine,ROBO3D/CuraEngine,ROBO3D/CuraEngine,Ultimaker/CuraEngine,Ultimaker/CuraEngine,alephobjects/CuraEngine