fixed some small bugs and updated version to 0.1.3

TSE_Core/src/BehaviourScripts/Camera.hpp

@@ -17,6 +17,12 @@ namespace TSE
         Perspective = 2,
     };
 
+    class ICameraHelper
+    {
+    public:
+        inline virtual void OnRenderTargetChanged(float width, float height) {};
+    };
+
     class Camera : public IResizeNotifiable, public BehaviourScript
     {
     private:
@@ -35,6 +41,7 @@ namespace TSE
         Vector2 lastRtSize = {0, 0};
 
     public:
+        static ICameraHelper* helper;
         static Camera* mainCamera;
 
         // Getter