Revert "Spiral 4"

This reverts commit 6ac27598e071856d5479963c0b3d792f1e9cf4f3.
Revert "gitignore"

This reverts commit 225187b44b52ee49243ceeff12932784c6bf368f.
Revert "Revert "gitignore""

This reverts commit 9596d11fbbfa6bbd51244e991013066bd4aae01c.