Trigger event on body itself before/after it's removed

Events.on(body, "beforeRemoved", callback);
Events.on(body, "afterRemoved", callback);

src/body/Body.js

@@ -634,6 +634,26 @@ var Axes = require('../geometry/Axes');
     *
     */
 
+    /**
+    * Fired before a body is going to be removed
+    *
+    * @event beforeRemoved
+    * @this {body} The body that is going to be removed
+    * @param {} event An event object
+    * @param {} event.source The source object of the event
+    * @param {} event.name The name of the event
+    */
+
+    /**
+    * Fired after a body was removed
+    *
+    * @event afterRemoved
+    * @this {body} The body that was removed
+    * @param {} event An event object
+    * @param {} event.source The source object of the event
+    * @param {} event.name The name of the event
+    */
+
     /**
     * Fired when a body starts sleeping (where `this` is the body).
     *

src/body/Composite.js

@@ -238,6 +238,7 @@ var Body = require('./Body');
      * @return {composite} The original composite with the body removed
      */
     Composite.removeBody = function(composite, body, deep) {
+        Events.trigger(body, 'beforeRemoved', {});
         var position = Common.indexOf(composite.bodies, body);
         if (position !== -1) {
             Composite.removeBodyAt(composite, position);
@@ -250,6 +251,7 @@ var Body = require('./Body');
             }
         }
 
+        Events.trigger(body, 'afterRemoved', {});
         return composite;
     };