objc2
* Upgrade to objc2 v0.4.0 and icrate v0.0.3 * Fix `touchBar` method * Use ClassType::alloc * Use #[method_id(...)] functionality in declare_class!
* Begin abstraction over UIKit * Clean up UIWindow override declaration * Clean up UIApplication delegate declaration * Clean up UIViewController override declaration * Finalize objc -> objc2 rename