Happ Super joystick tighter 8-way actuator

Improved actuator for a Happ Super joystick so that the game feels tighter, the movements are more responsive and you can easily hit diagonals; read more on the reasons behind [building this actuator](https://flow.gi/HappSuperJoystickActuator/).

You can download the OpenSCAD source file from the [github repository](https://github.com/llmora/electronics/tree/master/happ_superjoystick_actuator).