Add new methods to input handler, add RectangleShape2d, modify test game.

DaggerFramework/Source/InputAction.cs

@@ -4,6 +4,7 @@ namespace DaggerFramework
     {
         public abstract bool IsDown(InputHandler inputHandler);
         public abstract bool IsPressed(InputHandler inputHandler);
+        public abstract bool IsReleased(InputHandler inputHandler);
     }
 
     public class KeyInputAction : InputAction
@@ -24,6 +25,12 @@ namespace DaggerFramework
             return inputHandler.KeyboardKeyJustPressed(_keyboardKey);
         }
 
+        public override bool IsReleased(InputHandler inputHandler)
+        {
+            return inputHandler.KeyboardKeyJustReleased(_keyboardKey);
+        }
+
+
         private KeyboardKey _keyboardKey;
     }
 }