Customizer Dispenser

Customisable with Customizer.

- Width of a single item
- Depth of a single item
- Height of a single item
- Height of multiple items stacked inside
- Width of hole for inserting finger
- Percentage to squish/compress the semicircle hole
- Thickness of walls

Default convexity (edge roundness) is used as the web Customizer is slow. To increase, download and open in OpenSCAD, adding `$fn = 64;` or other value and wait for it to render. https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Other_Language_Features#.24fa.2C_.24fs_and_.24fn