Update to latest tools and SDKs

A full rewrite using Swift 5 and SpriteKit! Also adds basic iPad support

Layout tweaks for the iPhone X Partial rewrite in Swift

Add basic support for iPhone 6/6+ screens Compiled with the iOS 8 SDK De-support iOS 5 and 6

Fix iOS 5/6 rendering glitch Add iOS 5 game center

Game Center achievements and scoreboards; iOS 7 compatibility; miscellaneous UI refinements and code modernizations

Due to the shutdown of the OpenFeint service, OpenFeint has been removed. Sadly, this will be the last update compatible with arm6 devices (pre-3gs) or iOS 3 and 4.

• New high-resolution graphics for the new Retina Display iPhones and iPods • Updated OpenFeint integration • Battery Saver mode (background animations disabled when battery is low) • will background properly in iOS 4 • misc. minor bug fixes

Certain puzzles fixed so that their solutions are unique. Updated OpenFeint to 2.4.1. Minor stability fixes.