Take GoDot to the next level with autoloads - Also possibly bug in AddChild not keeping owner

I was following UmaiPixel platform tutorial and I wanted a way to automatically load the player and the parallax background on every scene change. Otherwise, I have to drag and drop and hoppa doodling every time I prepare a new game area. This led me to an adventure in GoDot large magic library and I found an old dusty book about autoloads. It's a very powerful spell indeed. Mu ha ha ha.