BouncyLayoutBouncyLayout is a collection view layout that makes your cells bounce.License: MITSwiftEaseLicense: MITExtrasLicense: MITObservableObservable is the easiest way to observe values in SwiftLicense: MITSwiftTinyConstraintsTiny Constraints is the syntactic sugar that makes NSLayoutConstraint sweeter for human use.License: MITSwift