Results 3 issues of Crogarox

onready var skeleton : Skeleton = get_parent() returns null even if you put it as the child node. ![image](https://user-images.githubusercontent.com/27801252/141522306-02398a4c-655a-44e3-9d2d-e2fe1e4409b7.png)

The animation model mannequiny-0.4.0.blend animations are slightly messed up. For example, when doing the run animation it swings its lefts comically to the side. Also, its not in the git...

Can you also compile the mono version of Godot for Pi3/Pi4 ?