Update to Swift 5

• Update to Swift 5 and Xcode 10.2.

• Remove auth tokens from .travis.yml.

Sometimes locks can be unfair... 🔒

• Updated subgroup sync mechanism to an os_unfair_lock 🔒

• Bumped the minimum OS versions:

  • iOS 10.0

  • macOS 10.12

  • tvOS 9.0

  • watchOS 3.0

• Updated documentation 📝

• Updated to Swift 4.2 (Xcode 10)

Update to Swift 4.1, improve CI 🤖

• Updated Swift version to 4.1 on the Podfile and README, removed .swift-version.

• Improved .travis.yml to automatically deploy to CocoaPods and Carthage.

Migrate to Swift 4 🤓

• Xcode 8 -> Xcode 9
• Swift 3 -> Swift 4.0

Farewell Obj-C, my old friend

Made project pure Swift 😊 (but preserved Obj-C compatibility)

• Removed APNSubGroupOperationQueue Obj-C class.
• Created DynamicSubGroupOperationQueue Swift class, which is essentially a SubGroupOperationQueue<AnyHashable> without being generic in order to be usable from Obj-C.

Let's give CocoaPods a hand...

Added .swift-version file to help CocoaPods define the correct SWIFT_VERSION

Hi Swift 3!

Migrated to Swift 3, and reviewed API's according to Apple's guidelines

Lil' Polishing

Made Swift classes final
Added __kindof modifier to Obj-C operation arrays
Made internal queues concurrent, and changed writes to use dispatch_barrier_sync

Privacy is important!

Did a little cleanup and made (APN)CompletionOperation private

Did anyone say Docs?

Documented all public API's 📝

Made a small improvement regarding purging empty subgroups form the internal queue's dictionary.