Merge pull request #2804 from radicalad/mrtk_development_interactionReceiver

vNext: InteractionReceiver base class

Author: keveleigh

Assets/MixedRealityToolkit-SDK/Features/Input/Handlers/BaseInputHandler.cs

@@ -17,10 +17,10 @@ public abstract class BaseInputHandler : InputSystemGlobalListener
         /// <summary>
         /// Is Focus required to receive input events on this GameObject?
         /// </summary>
-        public bool IsFocusRequired
+        public virtual bool IsFocusRequired
         {
             get { return isFocusRequired; }
-            set { isFocusRequired = value; }
+            protected set { isFocusRequired = value; }
         }
 
         #region MonoBehaviour Implementation