SnapKit 3.0 has many breaking changes from earlier versions. You can read the [notes on releases](https://github.com/SnapKit/SnapKit/releases) for more details.
1.`make.center.equalTo(0)` now positions a view at 0,0 in it's superview rather than the center, use `make.center.equalToSuperview` instead.
2.`updateConstraints` will throw a fatal error if it generates a *new* constraint that did not exist before. Instead use `makeConstraints` to add additional constraints.
