Event is now a class

Author: jube

docs/Event.adoc

@@ -12,7 +12,7 @@ xref:graphics_events.adoc[< Back to `graphics` Events]
 [source]
 ----
 #include <gf2/graphics/Event.h>
-struct Event;
+class Event;
 ----
 
 Events are generally polled from the system in a loop and handled immediately.

docs/graphics_events.adoc

@@ -20,7 +20,7 @@ xref:reference.adoc#graphics[< Back to reference]
 [source]
 ----
 #include <gf2/graphics/Event.h>
-struct Event;
+class Event;
 ----
 
 `Event` is a tagged union to describe system events. xref:Event.adoc[*Read more...*]

include/gf2/graphics/MotionGroup.h

@@ -12,7 +12,7 @@
 #include "GraphicsApi.h"
 
 namespace gf {
-  struct Event;
+  class Event;
 
   class GF_GRAPHICS_API MotionGroup {
   public: