Fix performClosureAfterDelay issue for iOS 10 #98
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After upgrading to Xcode 8 and automatically converting the codebase for iOS 10, the `performClosureAfterDelay` method causes a build error. Even if you don't do this automatic conversion you can get a `dispatch_block_t is unavailable in swift` error. Xcode recommended converting `closure` from `dispatch_block_t` to `() -> ()?` but that didn't work, instead I converted to an optional closure: `(() -> ())?` http://evgenii.com/blog/optional-trailing-closures-in-swift/
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After upgrading to Xcode 8 and automatically converting the codebase for iOS 10, the
performClosureAfterDelaymethod causes a build error. Even if you don't do this automatic conversion you can get adispatch_block_t is unavailable in swifterror.Xcode recommended converting
closurefromdispatch_block_tto() -> ()?but that didn't work, instead I converted to an optional closure:(() -> ())?http://evgenii.com/blog/optional-trailing-closures-in-swift/