BPXLUUIDHandler doesn't build in iOS10 anymore because `objc_retainedObject` is used in the codebase [here](https://github.com/blackpixel/BPXLUUIDHandler/blob/master/BPXLUUIDHandler.m#L113) and [here](https://github.com/blackpixel/BPXLUUIDHandler/blob/master/BPXLUUIDHandler.m#L213)