AppsFlyerUnityPlugin 4.18.0

* Updated Android SDK to v4.8.18
* Updated iOS SDK to v4.8.10
* Deprecated the `trackEvent(string eventName,string eventValue)` API 
- Use `trackRichEvent(string eventName, Dictionary<string, string> eventValues)` for event tracking.
* Fix for empty event values exception

Author: BenjaminAF

AppsFlyerUnityPlugin_v4.17.0.unitypackage

@@ -1,5 +1,12 @@
 # Release Notes
 
+### 4.18.0
+* Updated Android SDK to v4.8.18
+* Updated iOS SDK to v4.8.10
+* Deprecated the `trackEvent(string eventName,string eventValue)` API 
+- Use `trackRichEvent(string eventName, Dictionary<string, string> eventValues)` for event tracking.
+* Fix for empty event values exception 
+
 ### 4.17.0
 * Updated Android SDK to v4.8.13
 * Updated iOS SDK to v4.8.6