Changes in this version:
- Add UI with ability to perform multiple functions (Can be used to pause between trials using the ESC key)
- Ability to quit program
- Ability to calibrate PupilLabs eye tracker (If selected in the settings JSON)
- Ability to evaluate eye tracker calibration and output the results to a separate file
- Set fixated head position/rotation
- Make JSON option to make gaze sphere only visible to the spectator view
- Update documentation to reflect new changes
- Move multiple UXF UI options into the JSON settings file