Customizable (UNO) Card Set Box [Remix of Customizable Card Box by Beskytt]

This is a remix of [Customizable Card Box](http://www.thingiverse.com/thing:825768) by [Beskytt](http://www.thingiverse.com/Beskytt).

My changes are available in the attached "diff" file - mainly I reduced the size of the "locking hole" which was much too big in the original version in my opinion.

The default settings are the ones I used to print a box for a set of UNO playing cards:

card_number = 32;
card_length = 88;
card_width = 57;
card_thickness = 1;