Release version 2!
Changes:
- Using the latest field dimensions by rule book of RoboCup 2018.
- Improve visibility
- Using black as the background color.
- Using simple robot markers.
- Display detailed information.
- Voltage and temperature of the motor.
- Current strategy name.
- Display game state from the GameController.
- The remaining time, secondary time and score
- See https://github.com/RoboCup-Humanoid-TC/GameController/wiki/GameControlData