various components offering game-shell's functionality as standalone modules.
- https://github.com/hughsk/frame-debounce
- https://github.com/hughsk/gl-context
- https://github.com/hughsk/gl-clear
- https://github.com/hughsk/scroll-speed
- https://github.com/hughsk/key-pressed
- https://github.com/hughsk/mouse-pressed
- https://github.com/hughsk/mouse-position
- https://github.com/hughsk/canvas-orbit-camera
- https://github.com/hughsk/canvas-fit