Reintroduced DeleteEventArgs class as [Obsolete]

This was renamed to `TopicDeleteEventArgs`. This provides instructions to callers of the original class name.

Author: JeremyCaney

OnTopic/Obsolete/Repositories/DeleteEventArgs.cs

@@ -0,0 +1,39 @@
+/*==============================================================================================================================
+| Author        Ignia, LLC
+| Client        Ignia, LLC
+| Project       Topics Library
+\=============================================================================================================================*/
+using System;
+
+namespace OnTopic.Repositories {
+
+  /*============================================================================================================================
+  | CLASS: DELETE EVENT ARGS
+  \---------------------------------------------------------------------------------------------------------------------------*/
+  /// <summary>
+  ///   The DeleteEventArgs class defines an event argument type specific to deletion events
+  /// </summary>
+  [Obsolete("The DeleteEventArgs has been renamed to TopicEventArgs", true)]
+  public class DeleteEventArgs : EventArgs {
+
+    /*==========================================================================================================================
+    | CONSTRUCTOR: TAXONOMY DELETE EVENT ARGS
+    \-------------------------------------------------------------------------------------------------------------------------*/
+    /// <summary>
+    ///   Initializes a new instance of the <see cref="DeleteEventArgs"/> class.
+    /// </summary>
+    /// <param name="topic">The topic.</param>
+    public DeleteEventArgs(Topic topic) : base() {
+      Topic = topic;
+    }
+
+    /*==========================================================================================================================
+    | PROPERTY: TOPIC
+    \-------------------------------------------------------------------------------------------------------------------------*/
+    /// <summary>
+    ///   Getter that returns the Topic object associated with the event
+    /// </summary>
+    public Topic Topic { get; set; }
+
+  } //Class
+} //Namespace