Import epiphany-base design.

	* epiphany-base/epiphany-base.scad: Imported.
	* epiphany-base/epiphany-base.stl: Ditto.
	* epiphany-base/epiphany-core.scad: Ditto.
	* epiphany-base/epiphany-dimensions.scad: Ditto.
	* epiphany-base/epiphany-parameters.scad: Ditto.
	* epiphany-base/epiphany-spacer.scad: Ditto.
	* epiphany-base/epiphany-spacer.stl: Ditto.
	* epiphany-base/epiphany-top.scad: Ditto.