Cad like manipulation

[hooger]

Added mouse support Added necessary functions to support rotation and translation around global X and Y coordinates, as opposed to local coordinate frame

[minad]

@hooger After these years, are you still interested in this feature? I upstreamed scad-preview into scad-mode itself. Do you want to update this PR?

https://github.com/openscad/emacs-scad-mode

[hooger]

I'm not using emacs anymore, so I don't think I'm going to work on it.

[minad]

Okay, thanks!