William Harvey

`transitionContext.view(forKey: ...)` returns nil under some circumstances for iOS 13. There appear to be [multiple workarounds](https://stackoverflow.com/questions/57802743/uiviewcontroller-custom-transition-stuck-on-ios13) Simplest fix for this app is probably rewriting [SplashViewController lines 79-80](https://github.com/TiagoMaiaL/Habit-Calendar/blob/master/Habit-Calendar/Habit-Calendar/Controllers/SplashViewController.swift#L79) as: ``` guard...