Customizable Card Box

A box which can be used to hold a wide variety of card sizes (or technically things which are not cards as well, but it's made with cards in mind).

This is an OpenSCAD remake of something I made years ago in TinkerCAD. Now that I'm learning the former, I've got no more use for the latter.

New in v1-2:
- Fixed the draw tool so it actually works!

Coming:
- Re-implementation of the border thickness controls once I work out the math to make it work with the lock
- Improved locking sys