0.1.8

• min sdk 19
• added IKDispatcher.subscribe(notif: String, noinline sub: Subscriber<T>) without priority
• changed IKDispatcher.subscribe(notif: String, noinline sub: Subscriber<T>, priority: Int? = null) params sorting
• changed HashMaps to ArrayMaps for better memory improvement
• added check hasSubscribers in IKDispatcher.subscribeList extension method