Ice Shot Glass Maker

With this thing, you can make shot glasses made of ice.

It is made in OpenSCAD and it's fully parametric.

Changes in version 1.1:
- added a centralWedgeSpace parameter, default to 1 mm, as per Linkreincarnate's feedback (pot_1.0.stl is not changed, you can print it)
- slightly changed the algorithm that positions the caps near the pot, eg when rendering both together

Changes in version 1.2:
- fixed a bug: the chosen glass thickness was right only at the top border of the glass (pot_1