Nuke 10.8.0

• Add async/await support (requires Xcode 13.3) – #532

extension ImagePipeline {
    public func loadImage(with request: ImageRequestConvertible) async throws -> ImageResponse
    public func loadData(with request: ImageRequestConvertible) async throws -> (Data, URLResponse?)
}

extension FetchImage {
    public func load(_ action: @escaping () async throws -> ImageResponse)
}