Two new features:
Multipass Z cuts (@Domenic_Di_Giorgio1 , @An_R_key and and @Diego_Trapero was asking for this) and
Enable/Disable 3D space rotation. For laser work 2D view topdown makes most sense, but for CNC and multipass cutting you may want to inspect it from the side too, so I added a checkbox on the lower part of the window where you can switch between 2D and 3D on the fly
