Most of the API's are changed. Will need to migrate the code base from swift 2.3 to swift 3. Tedious work. But what I liked about the swift 3 API change was the

Most of the API's are changed. Will need to migrate the code base from swift 2.3 to swift 3. Tedious work. But what I liked about the swift 3 API change was the swifitification of the GCD API. I liked it