Ikea inspired vase (customizable)

Highly-customizable Ikea inspired vases. This script is based on two discontinued Ikea ceramic vases (shown in the photos above):

* One with rounded corners (unknown model)
* One with an angular design (000.692.21)

The generated vases aren't exactly the same (the originals are ceramic and thus vary a bit in shape) but are accurate to within a millimeter or so in all dimensions.

The `Ikea_vase.json` file contains presets for all the designs shown. The two included "Custom" designs aren't based off of real-world prototypes. They're included just to show some of the things that can be created with the script.

Supports can optionally be generated:

* Supporting the base with a gap included for adding a layer of tape above the support.
* Fully supporting the base (for multi-extruder printers)
* Fully supporting the entire vase (for multi-extruder printers)