Assure it works with latest gfx-debug-draw
Assure it works with latest gfx-debug-draw

* The `from_canvas()` function changed signature
* `resize()` was removed from window. It seems to handle this correctly anyway though

gfx-debug-draw I used was:
git+https://github.com/PistonDevelopers/gfx-debug-draw#5e8f03faeff604582a4be09391ee64e52e85bef3

PistonDevelopers/skeletal_animation_demo,stjahns/skeletal_animation_demo,bvssvni/skeletal_animation_demo