Revert "Initial Commit"

This reverts commit 467d780472021088ee3afdbfc175434196361edb.
Revert "Remove Accidental File"

This reverts commit 7a328b62e5bd2055556bdf91821ed63bc778109d.
Changed from List To Set

Also eliminates duplicate triangles. Potential side effect of cancelling
out zero-width/height cubes, as well as exterior cube walls if two cubes
intersect the outside at the same location.