Conditional compilation of an igl winding number tree for SLA support generator, as it is not used as of now and initialization of the tree is expensive.
Fixed issue with passing the new SLA point definition to the back end and back to the UI.
- unselected objects are hidden when SLA gizmo is active
- support volumes are hidden when editing mode is active
- 3mf support points format versioning
- semi-intelligent algorithm to place support points
- enhanced ImGui dialog with editing/non-editing mode
- support points can have different head diameter (only implemented in GUI so far)
- autogenerated points supporting emerging islands are annotated and the info is kept
