SceneMainLoop -> SceneTree

-=-=-=-=-=-=-=-=-=-=-=-=-=-

*YOUR SOURCE MIGHT NOT WORK*
For mor information on fix:
https://github.com/okamstudio/godot/wiki/devel_scene_tree

Other stuff:
-Shower of bullets demo
-Fixes all around

scene/2d/collision_shape_2d.cpp

@@ -72,12 +72,12 @@ void CollisionShape2D::_notification(int p_what) {
 
 	switch(p_what) {
 
-		case NOTIFICATION_ENTER_SCENE: {
+		case NOTIFICATION_ENTER_TREE: {
 			unparenting=false;
 		} break;
 		case NOTIFICATION_LOCAL_TRANSFORM_CHANGED: {
 
-			if (!is_inside_scene())
+			if (!is_inside_tree())
 				break;
 			_update_parent();