Customizable Maneuver Dial for X-Wing V2.3

This is an updated version of Ludwig W. Wall's maneuver dial for X-Wing: https://www.thingiverse.com/thing:1421725

Added Reverse Bank maneuvers, maneuver list easy import from x-wing data, color preview for maneuvers, and updated imports of text_on and spiff-sans.

For the imports of text_on and spiff-sans, you will need to do one of the following:

• clone my github repo with --recurse-submodules
• re-write your scad imports to match where you have text_on and spiff-sans downloaded