Customizable Case with Screws and Boreholes

Improvement of https://www.thingiverse.com/thing:3320287
Now supports holes.

Supports currently 10 holes which should be enough for most cases.
Create holes for leds and cables.

The customizer is quite slow and doesn't show the holes correctly.
If you want to edit it similarly to the online version directly in openscad, follow the instructions here:

* Get the Development Snapshot from here: http://www.openscad.org/downloads.html

* Open openscad

* Navigate to Edit -> Preferences