Colourful lithophane lamp

Ok, I really don't want to call this a remix - essentially, it isn't finished, and likely to remain so. There are a few problems with the parts I've added, but since I was able to fix that with a file and some pliers (and a bit of glue), I won't be updating the .stl unless I will create another of those lamps.

The difference to the original:
- removed the original power supply hole
- added a small base below the body to gain space for the incremetal encoder
- added one hole and mounting block for an incremental encoder (ky-040 type)
- added one hole and mounting bracket for an Arduino Nano (clone)

The LEDs are now supposed to be of the Neopixel/WS2812B variety, and are controlled by the incremental encoder, via an Arduino Nano in the basement. The USB connector for the Nano also serves as power supply for the contraption.

The Arduino sketch is available at https://github.com/markus-i/colour-light