- worked on properties/connectors (as defined by openjscad in csg.js) visualisation
 * very basic for now (simple 3d cubes at the "points" defined in connectors)
 * added connector visualisation toggle to visualEditorSettings
 * unfortunatly the workings &  merging of properties (as defined in the original code) and the way the system works feels clunky/weird, so this
will take some more exploration
- started preliminary work on hull (quickhull to be precise) implementation
 * not working for now
 * catching up on theory & maths
 * some of the steps are implemented but not complete yet
-various minor cleanups in csg files